ZXIIIT
XIII
Would you replace the singer with a tape? A guitarist? I'm not sure that I'm ok with this... (says the guy who's considering using samples because keyboardists are rarer than hens' teeth...)
No, but there are times when certain vocals are on a backing track (guest spots from another musicians on tracks)
But I personally would only go as far as using a backing track for drums/keyboards, finding a reliable/responsible/on time drummer is a major time consuming effort, not to mention setup time/tear down, in some cases, it works real well, but for now, a proper PA does the trick, since most venues mic the drum kit anyway....