It's the second time my response disappears on this forum (#8) so here it is again, this time without image:
MIDI sniffer data, first list with clock off, second list in real time. Looks very normal. Works with GarageBand. The MIDI passes trough the M-audio MIDIsport, that's why you don't see the Yamaha.
=== clock off
10:02:22.426 From MIDISPORT 2x2 Port A Note On 1 C2 68
10:02:23.164 From MIDISPORT 2x2 Port A Note Off 1 C2 0
10:02:23.179 From MIDISPORT 2x2 Port A Note On 1 D2 77
10:02:23.914 From MIDISPORT 2x2 Port A Note Off 1 D2 0
10:02:23.918 From MIDISPORT 2x2 Port A Note On 1 E2 78
10:02:24.662 From MIDISPORT 2x2 Port A Note Off 1 E2 0
10:02:24.675 From MIDISPORT 2x2 Port A Note On 1 F2 77
10:02:25.360 From MIDISPORT 2x2 Port A Note On 1 G2 72
10:02:25.365 From MIDISPORT 2x2 Port A Note Off 1 F2 0
10:02:26.106 From MIDISPORT 2x2 Port A Note On 1 A2 70
10:02:26.114 From MIDISPORT 2x2 Port A Note Off 1 G2 0
10:02:26.824 From MIDISPORT 2x2 Port A Note On 1 B2 80
10:02:26.840 From MIDISPORT 2x2 Port A Note Off 1 A2 0
10:02:29.616 From MIDISPORT 2x2 Port A Note Off 1 B2 0
10:02:30.475 From MIDISPORT 2x2 Port A Note On 1 C2 87
10:02:30.571 From MIDISPORT 2x2 Port A Note Off 1 C2 0
10:02:31.052 From MIDISPORT 2x2 Port A Note On 1 D2 90
10:02:31.124 From MIDISPORT 2x2 Port A Note Off 1 D2 0
10:02:31.633 From MIDISPORT 2x2 Port A Note On 1 E2 87
10:02:31.706 From MIDISPORT 2x2 Port A Note Off 1 E2 0
10:02:32.206 From MIDISPORT 2x2 Port A Note On 1 F2 86
10:02:32.276 From MIDISPORT 2x2 Port A Note Off 1 F2 0
10:02:32.766 From MIDISPORT 2x2 Port A Note On 1 G2 75
10:02:32.841 From MIDISPORT 2x2 Port A Note Off 1 G2 0
10:02:33.335 From MIDISPORT 2x2 Port A Note On 1 A2 77
10:02:33.416 From MIDISPORT 2x2 Port A Note Off 1 A2 0
10:02:33.941 From MIDISPORT 2x2 Port A Note On 1 B2 83
10:02:34.020 From MIDISPORT 2x2 Port A Note Off 1 B2 0
10:02:35.221 From MIDISPORT 2x2 Port A Note On 1 C2 63
10:02:35.962 From MIDISPORT 2x2 Port A Note On 1 D2 82
10:02:36.630 From MIDISPORT 2x2 Port A Note On 1 E2 71
10:02:37.333 From MIDISPORT 2x2 Port A Note On 1 F2 73
10:02:38.052 From MIDISPORT 2x2 Port A Note On 1 G2 60
10:02:38.800 From MIDISPORT 2x2 Port A Note On 1 A2 64
10:02:39.544 From MIDISPORT 2x2 Port A Note On 1 B2 66
10:02:41.974 From MIDISPORT 2x2 Port A Note Off 1 G2 0
10:02:41.983 From MIDISPORT 2x2 Port A Note Off 1 A2 0
10:02:41.987 From MIDISPORT 2x2 Port A Note Off 1 F2 0
10:02:41.995 From MIDISPORT 2x2 Port A Note Off 1 E2 0
10:02:42.000 From MIDISPORT 2x2 Port A Note Off 1 D2 0
10:02:42.003 From MIDISPORT 2x2 Port A Note Off 1 B2 0
10:02:42.011 From MIDISPORT 2x2 Port A Note Off 1 C2 0
10:02:43.273 From MIDISPORT 2x2 Port A Note On 1 C0 77
10:02:44.449 From MIDISPORT 2x2 Port A Note Off 1 C0 0
10:02:44.565 From MIDISPORT 2x2 Port A Note On 1 C1 64
10:02:45.729 From MIDISPORT 2x2 Port A Note Off 1 C1 0
10:02:45.760 From MIDISPORT 2x2 Port A Note On 1 C2 56
10:02:46.845 From MIDISPORT 2x2 Port A Note On 1 C3 63
10:02:46.857 From MIDISPORT 2x2 Port A Note Off 1 C2 0
10:02:47.873 From MIDISPORT 2x2 Port A Note Off 1 C3 0
10:02:47.924 From MIDISPORT 2x2 Port A Note On 1 C4 68
10:02:48.955 From MIDISPORT 2x2 Port A Note Off 1 C4 0
10:02:49.036 From MIDISPORT 2x2 Port A Note On 1 C5 81
10:02:50.134 From MIDISPORT 2x2 Port A Note Off 1 C5 0
10:02:50.170 From MIDISPORT 2x2 Port A Note On 1 C6 82
10:02:51.421 From MIDISPORT 2x2 Port A Note Off 1 C6 0
=== real time
10:05:47.670 From MIDISPORT 2x2 Port A Clock
10:05:47.692 From MIDISPORT 2x2 Port A Clock
10:05:47.713 From MIDISPORT 2x2 Port A Clock
10:05:47.735 From MIDISPORT 2x2 Port A Clock
10:05:47.756 From MIDISPORT 2x2 Port A Clock
10:05:47.778 From MIDISPORT 2x2 Port A Clock
10:05:47.800 From MIDISPORT 2x2 Port A Clock
10:05:47.808 From MIDISPORT 2x2 Port A Note On 1 C2 63
10:05:47.816 From MIDISPORT 2x2 Port A Active Sense
10:05:47.821 From MIDISPORT 2x2 Port A Clock
10:05:47.842 From MIDISPORT 2x2 Port A Clock
10:05:47.864 From MIDISPORT 2x2 Port A Clock
10:05:47.886 From MIDISPORT 2x2 Port A Clock
10:05:47.907 From MIDISPORT 2x2 Port A Clock
10:05:47.929 From MIDISPORT 2x2 Port A Clock
10:05:47.950 From MIDISPORT 2x2 Port A Clock
10:05:47.972 From MIDISPORT 2x2 Port A Clock
10:05:47.990 From MIDISPORT 2x2 Port A Note Off 1 C2 0
10:05:47.994 From MIDISPORT 2x2 Port A Clock
10:05:48.015 From MIDISPORT 2x2 Port A Clock
10:05:48.016 From MIDISPORT 2x2 Port A Active Sense
10:05:48.036 From MIDISPORT 2x2 Port A Clock
10:05:48.058 From MIDISPORT 2x2 Port A Clock
10:05:48.080 From MIDISPORT 2x2 Port A Clock
10:05:48.101 From MIDISPORT 2x2 Port A Clock
10:05:48.123 From MIDISPORT 2x2 Port A Clock
10:05:48.144 From MIDISPORT 2x2 Port A Clock
10:05:48.155 From MIDISPORT 2x2 Port A Note On 1 D2 82
10:05:48.166 From MIDISPORT 2x2 Port A Clock
10:05:48.187 From MIDISPORT 2x2 Port A Clock
10:05:48.209 From MIDISPORT 2x2 Port A Clock
10:05:48.216 From MIDISPORT 2x2 Port A Active Sense
10:05:48.230 From MIDISPORT 2x2 Port A Clock
10:05:48.252 From MIDISPORT 2x2 Port A Clock
10:05:48.274 From MIDISPORT 2x2 Port A Clock
10:05:48.295 From MIDISPORT 2x2 Port A Clock
10:05:48.311 From MIDISPORT 2x2 Port A Note Off 1 D2 0
10:05:48.317 From MIDISPORT 2x2 Port A Clock
10:05:48.338 From MIDISPORT 2x2 Port A Clock
10:05:48.360 From MIDISPORT 2x2 Port A Clock
10:05:48.381 From MIDISPORT 2x2 Port A Clock
10:05:48.403 From MIDISPORT 2x2 Port A Clock
10:05:48.416 From MIDISPORT 2x2 Port A Active Sense
10:05:48.424 From MIDISPORT 2x2 Port A Clock
10:05:48.446 From MIDISPORT 2x2 Port A Clock
10:05:48.468 From MIDISPORT 2x2 Port A Clock
10:05:48.489 From MIDISPORT 2x2 Port A Clock
10:05:48.511 From MIDISPORT 2x2 Port A Note On 1 E2 72
10:05:48.512 From MIDISPORT 2x2 Port A Clock
10:05:48.532 From MIDISPORT 2x2 Port A Clock
10:05:48.554 From MIDISPORT 2x2 Port A Clock
10:05:48.575 From MIDISPORT 2x2 Port A Clock
10:05:48.597 From MIDISPORT 2x2 Port A Clock
10:05:48.616 From MIDISPORT 2x2 Port A Active Sense
10:05:48.618 From MIDISPORT 2x2 Port A Clock
10:05:48.640 From MIDISPORT 2x2 Port A Clock
10:05:48.643 From MIDISPORT 2x2 Port A Note Off 1 E2 0
10:05:48.662 From MIDISPORT 2x2 Port A Clock
10:05:48.683 From MIDISPORT 2x2 Port A Clock
10:05:48.704 From MIDISPORT 2x2 Port A Clock
10:05:48.726 From MIDISPORT 2x2 Port A Clock
10:05:48.748 From MIDISPORT 2x2 Port A Clock
10:05:48.769 From MIDISPORT 2x2 Port A Clock
10:05:48.791 From MIDISPORT 2x2 Port A Clock
10:05:48.812 From MIDISPORT 2x2 Port A Clock
10:05:48.816 From MIDISPORT 2x2 Port A Active Sense
10:05:48.834 From MIDISPORT 2x2 Port A Clock
10:05:48.855 From MIDISPORT 2x2 Port A Clock
10:05:48.864 From MIDISPORT 2x2 Port A Note On 1 F2 71
10:05:48.877 From MIDISPORT 2x2 Port A Clock
10:05:48.898 From MIDISPORT 2x2 Port A Clock
10:05:48.920 From MIDISPORT 2x2 Port A Clock
10:05:48.942 From MIDISPORT 2x2 Port A Clock
10:05:48.963 From MIDISPORT 2x2 Port A Clock
10:05:48.977 From MIDISPORT 2x2 Port A Note Off 1 F2 0
10:05:48.985 From MIDISPORT 2x2 Port A Clock
10:05:49.006 From MIDISPORT 2x2 Port A Clock
10:05:49.016 From MIDISPORT 2x2 Port A Active Sense
10:05:49.028 From MIDISPORT 2x2 Port A Clock
10:05:49.049 From MIDISPORT 2x2 Port A Clock
10:05:49.071 From MIDISPORT 2x2 Port A Clock
10:05:49.092 From MIDISPORT 2x2 Port A Clock
10:05:49.114 From MIDISPORT 2x2 Port A Clock
10:05:49.136 From MIDISPORT 2x2 Port A Clock
10:05:49.157 From MIDISPORT 2x2 Port A Clock
10:05:49.178 From MIDISPORT 2x2 Port A Clock
10:05:49.184 From MIDISPORT 2x2 Port A Note On 1 G2 69
10:05:49.200 From MIDISPORT 2x2 Port A Clock
10:05:49.216 From MIDISPORT 2x2 Port A Active Sense
10:05:49.222 From MIDISPORT 2x2 Port A Clock
10:05:49.243 From MIDISPORT 2x2 Port A Clock
10:05:49.265 From MIDISPORT 2x2 Port A Clock
10:05:49.286 From MIDISPORT 2x2 Port A Clock
10:05:49.305 From MIDISPORT 2x2 Port A Note Off 1 G2 0
10:05:49.308 From MIDISPORT 2x2 Port A Clock
10:05:49.329 From MIDISPORT 2x2 Port A Clock
10:05:49.351 From MIDISPORT 2x2 Port A Clock
10:05:49.372 From MIDISPORT 2x2 Port A Clock
10:05:49.394 From MIDISPORT 2x2 Port A Clock
10:05:49.416 From MIDISPORT 2x2 Port A Clock
10:05:49.417 From MIDISPORT 2x2 Port A Active Sense
10:05:49.437 From MIDISPORT 2x2 Port A Clock
10:05:49.459 From MIDISPORT 2x2 Port A Clock
10:05:49.480 From MIDISPORT 2x2 Port A Clock
10:05:49.502 From MIDISPORT 2x2 Port A Clock
10:05:49.510 From MIDISPORT 2x2 Port A Note On 1 A2 69
10:05:49.523 From MIDISPORT 2x2 Port A Clock
10:05:49.545 From MIDISPORT 2x2 Port A Clock
10:05:49.566 From MIDISPORT 2x2 Port A Clock
10:05:49.588 From MIDISPORT 2x2 Port A Clock
10:05:49.610 From MIDISPORT 2x2 Port A Clock
10:05:49.616 From MIDISPORT 2x2 Port A Active Sense
10:05:49.626 From MIDISPORT 2x2 Port A Note Off 1 A2 0
10:05:49.631 From MIDISPORT 2x2 Port A Clock
10:05:49.653 From MIDISPORT 2x2 Port A Clock
10:05:49.674 From MIDISPORT 2x2 Port A Clock
10:05:49.696 From MIDISPORT 2x2 Port A Clock
10:05:49.717 From MIDISPORT 2x2 Port A Clock
10:05:49.739 From MIDISPORT 2x2 Port A Clock
10:05:49.760 From MIDISPORT 2x2 Port A Clock
10:05:49.782 From MIDISPORT 2x2 Port A Clock
10:05:49.804 From MIDISPORT 2x2 Port A Clock
10:05:49.816 From MIDISPORT 2x2 Port A Active Sense
10:05:49.825 From MIDISPORT 2x2 Port A Clock
10:05:49.847 From MIDISPORT 2x2 Port A Clock
10:05:49.868 From MIDISPORT 2x2 Port A Clock
10:05:49.880 From MIDISPORT 2x2 Port A Note On 1 B2 74
10:05:49.890 From MIDISPORT 2x2 Port A Clock
10:05:49.911 From MIDISPORT 2x2 Port A Clock
10:05:49.933 From MIDISPORT 2x2 Port A Clock
10:05:49.954 From MIDISPORT 2x2 Port A Clock
10:05:49.976 From MIDISPORT 2x2 Port A Clock
10:05:49.997 From MIDISPORT 2x2 Port A Note Off 1 B2 0
10:05:49.998 From MIDISPORT 2x2 Port A Clock
10:05:50.016 From MIDISPORT 2x2 Port A Active Sense
10:05:50.019 From MIDISPORT 2x2 Port A Clock
10:05:50.040 From MIDISPORT 2x2 Port A Clock
10:05:50.062 From MIDISPORT 2x2 Port A Clock
10:05:50.084 From MIDISPORT 2x2 Port A Clock
10:05:50.105 From MIDISPORT 2x2 Port A Clock
10:05:50.127 From MIDISPORT 2x2 Port A Clock
10:05:50.148 From MIDISPORT 2x2 Port A Clock
10:05:50.170 From MIDISPORT 2x2 Port A Clock
10:05:50.191 From MIDISPORT 2x2 Port A Clock
10:05:50.213 From MIDISPORT 2x2 Port A Clock
10:05:50.216 From MIDISPORT 2x2 Port A Active Sense
10:05:50.234 From MIDISPORT 2x2 Port A Clock
10:05:50.242 From MIDISPORT 2x2 Port A Note On 1 C3 77
10:05:50.256 From MIDISPORT 2x2 Port A Clock
10:05:50.278 From MIDISPORT 2x2 Port A Clock
10:05:50.299 From MIDISPORT 2x2 Port A Clock
10:05:50.321 From MIDISPORT 2x2 Port A Clock
10:05:50.342 From MIDISPORT 2x2 Port A Clock
10:05:50.360 From MIDISPORT 2x2 Port A Note Off 1 C3 0
10:05:50.364 From MIDISPORT 2x2 Port A Clock
10:05:50.385 From MIDISPORT 2x2 Port A Clock
10:05:50.407 From MIDISPORT 2x2 Port A Clock
10:05:50.416 From MIDISPORT 2x2 Port A Active Sense
10:05:50.428 From MIDISPORT 2x2 Port A Clock
10:05:50.450 From MIDISPORT 2x2 Port A Clock
10:05:50.471 From MIDISPORT 2x2 Port A Clock
10:05:50.493 From MIDISPORT 2x2 Port A Clock
10:05:50.515 From MIDISPORT 2x2 Port A Clock
10:05:50.536 From MIDISPORT 2x2 Port A Clock
10:05:50.559 From MIDISPORT 2x2 Port A Note On 1 B2 74
10:05:50.559 From MIDISPORT 2x2 Port A Clock
10:05:50.579 From MIDISPORT 2x2 Port A Clock
10:05:50.601 From MIDISPORT 2x2 Port A Clock
10:05:50.616 From MIDISPORT 2x2 Port A Active Sense
10:05:50.622 From MIDISPORT 2x2 Port A Clock
10:05:50.644 From MIDISPORT 2x2 Port A Clock
10:05:50.665 From MIDISPORT 2x2 Port A Clock
10:05:50.682 From MIDISPORT 2x2 Port A Note Off 1 B2 0
10:05:50.687 From MIDISPORT 2x2 Port A Clock
10:05:50.709 From MIDISPORT 2x2 Port A Clock
10:05:50.730 From MIDISPORT 2x2 Port A Clock
10:05:50.752 From MIDISPORT 2x2 Port A Clock
10:05:50.773 From MIDISPORT 2x2 Port A Clock
10:05:50.795 From MIDISPORT 2x2 Port A Clock
10:05:50.816 From MIDISPORT 2x2 Port A Active Sense
10:05:50.817 From MIDISPORT 2x2 Port A Clock
10:05:50.838 From MIDISPORT 2x2 Port A Clock
10:05:50.859 From MIDISPORT 2x2 Port A Clock
10:05:50.884 From MIDISPORT 2x2 Port A Note On 1 A2 74
10:05:50.885 From MIDISPORT 2x2 Port A Clock
10:05:50.902 From MIDISPORT 2x2 Port A Clock
10:05:50.924 From MIDISPORT 2x2 Port A Clock
10:05:50.946 From MIDISPORT 2x2 Port A Clock
10:05:50.967 From MIDISPORT 2x2 Port A Clock
10:05:50.989 From MIDISPORT 2x2 Port A Clock
10:05:50.998 From MIDISPORT 2x2 Port A Note Off 1 A2 0
10:05:51.010 From MIDISPORT 2x2 Port A Clock
10:05:51.016 From MIDISPORT 2x2 Port A Active Sense
10:05:51.032 From MIDISPORT 2x2 Port A Clock
10:05:51.053 From MIDISPORT 2x2 Port A Clock
10:05:51.075 From MIDISPORT 2x2 Port A Clock
10:05:51.096 From MIDISPORT 2x2 Port A Clock
10:05:51.118 From MIDISPORT 2x2 Port A Clock
10:05:51.139 From MIDISPORT 2x2 Port A Clock
10:05:51.161 From MIDISPORT 2x2 Port A Clock
10:05:51.183 From MIDISPORT 2x2 Port A Clock
10:05:51.204 From MIDISPORT 2x2 Port A Clock
10:05:51.216 From MIDISPORT 2x2 Port A Active Sense
10:05:51.225 From MIDISPORT 2x2 Port A Note On 1 G2 74
10:05:51.226 From MIDISPORT 2x2 Port A Clock
10:05:51.247 From MIDISPORT 2x2 Port A Clock
10:05:51.269 From MIDISPORT 2x2 Port A Clock
10:05:51.290 From MIDISPORT 2x2 Port A Clock
10:05:51.312 From MIDISPORT 2x2 Port A Clock
10:05:51.333 From MIDISPORT 2x2 Port A Clock
10:05:51.346 From MIDISPORT 2x2 Port A Note Off 1 G2 0
10:05:51.355 From MIDISPORT 2x2 Port A Clock
10:05:51.377 From MIDISPORT 2x2 Port A Clock
10:05:51.398 From MIDISPORT 2x2 Port A Clock
10:05:51.416 From MIDISPORT 2x2 Port A Active Sense
10:05:51.420 From MIDISPORT 2x2 Port A Clock
10:05:51.441 From MIDISPORT 2x2 Port A Clock
10:05:51.463 From MIDISPORT 2x2 Port A Clock
10:05:51.484 From MIDISPORT 2x2 Port A Clock
10:05:51.506 From MIDISPORT 2x2 Port A Clock
10:05:51.527 From MIDISPORT 2x2 Port A Clock
10:05:51.549 From MIDISPORT 2x2 Port A Clock
10:05:51.557 From MIDISPORT 2x2 Port A Note On 1 F2 85
10:05:51.570 From MIDISPORT 2x2 Port A Clock
10:05:51.592 From MIDISPORT 2x2 Port A Clock
10:05:51.614 From MIDISPORT 2x2 Port A Clock
10:05:51.616 From MIDISPORT 2x2 Port A Active Sense
10:05:51.635 From MIDISPORT 2x2 Port A Clock
10:05:51.657 From MIDISPORT 2x2 Port A Clock
10:05:51.667 From MIDISPORT 2x2 Port A Note Off 1 F2 0
10:05:51.678 From MIDISPORT 2x2 Port A Clock
10:05:51.700 From MIDISPORT 2x2 Port A Clock
10:05:51.721 From MIDISPORT 2x2 Port A Clock
10:05:51.743 From MIDISPORT 2x2 Port A Clock