Using Cubase Elements II, I used my Akai MPK49 to record a drum track with Halion Sonic SE, recorded a bass track with the same, then unplugged the Akai to plug in M-Audio interface to record 2 separate guitar tracks.
I then unplugged the M-Audio and replugged the Akai to fine tune the drums and bass - drum volume suddenly at minimum (tracks still there), and I physically saw and heard the bass volume drop to minimum as soon as I selected that channel.
Guitar channels are fine.
I compared the Studio Setup and Audio Connection settings to another song where I can still hear the drums and bass - they are the same.
What happened? Where else can I check volume control?
The confusing thing is - there is volume - just minimum with the mix console volumes all the way up.
Thank you for your help.