I've already posted his in Express 8 , but since I've upgraded to 9 I'll post it here as well. I can't record software instruments. The red R lights up on the track and the transport , the level meters respond and I can hear the notes/ drums being played when I use the Piano Roll , but nothing is recorded. I can playback loops (software and audio)and I can record and playback audio , just not record using the software instruments. When I was using 8 , in the information about the track on the left of the Arrange window , at the top of the instrument strip where it read " Core Audio - Inst.1" , the letters were greyed out. Now I've upgraded to 9 , the words "Core Audio" are in black , but "Inst. 1" is still greyed out. Any ideas? , it's really frustrating. Software instruments record fine in Garageband.