I recorded MIDI parts on the same track; everything was playing. Suddenly prior sections I recorded in this track are not showing in the track nor piano roll, and nothing is playing in that section. I'm guessing I accidentally hit a secret keystroke or button that plays only the selected region. The region was split in one spot and I shortened the region, the previous notes were in the clip "underneath" it. But other sections I haven't been able to uncover. Any suggestions welcome!