PC software that plays songs but allows muting specific instruments in Solo and Duo Acts Posted January 15 I encourage those of you who can do so to switch to AAC files from mp3. A long time friend and engineer made me aware of that almost a decade ago and they do sound much better, even on small systems. I have two different mixes for my stuff- acoustic and electric guitar. The electric guitar tracks are rendered without the lead and/or main guitars so I can solo electric guitar "live." The acoustic tunes are missing the main acoustic part which I play on my Ovation during the show. On the acoustic mixes, I ended up adding some electric guitar solos to several tunes because, inevitably, I will be playing acoustic guitar per the client's request when the gig takes a left turn and I need "Summer of 69," "Jessie's Girl," "Born To Be Wild," etc. So I definitely use two different mixes with parts missing I perform "live." I enjoy this thread and glad to hear other folks' input, too.