I used to do part of a pub set, many years ago, where I plugged a CD player into my combo amp and played backing tracks for my electric guitar and vocals. However, the difference was that all the backing tracks and all parts on the CD - bass, drums, keyboards, etc. - had been recorded by me in my home studio, and I used to stress this before I kicked off on the set. It also formed just part of the whole set - about 50% - and I really considered it just a bit of fun, a sort of novelty, in those days.