A few years ago, our town was featuring live music on the lawn outside Town Hall during the 'lunch' hours ... One day there were two young guys, one on a scaled down drum set, the other on guitar and vocals, using a looper ... It was interesting at first watching him create the bass line, background chords, some fills, etc. but after a couple of songs I lost interest and it seemed his drummer did also, waiting for the track to be completed ... it was most annoying when he would make a mistake and have to do the part over ...