I have recorded a complex song and often need to adjust the recorded sound volume. All of a sudden I cannot control volume anymore: if I hit the small triangle in the left lower corner of individual notes the slider with which you can control volume appears for a split second and then disappears so that control is impossible. Please help, thanks.
Hi,
are you talking about MIDI or audio tracks?
Can you upload a screenshot, please? This would be the easiest way to help you without second-guessing what you were referring to 
Thanks