My chargeable amp ran out of juice last week on the street and I hadn't played completely solo in a few years. It was kind of nice, really. It almost felt like practicing because I had to be much more careful. Also solos had to be chordal and I had to throw more of the original melody in there. In a word, I had to play better. So my question is, do you make more money playing with or without backing tracks. I've probably asked this question before, but I'd like an up to date, post-plague answer.