I think Chas and Diki make some really good posts on this forum and I understand both points of view but I also think Diki's post above has some very good comments within. Posters don't have to adhere to what the OP had in mind... our minds wander and we post what comes to mind. If arranger thoughts come to mind, well, it's an arranger forum, it's somewhat natural.

As for me, if I go to a concert of a famous band, I don't want them using tracks. Plenty of bands are good enough to pull off a live performance and slay us with their talent. If the song is a bit different from the recorded song, so be it. I understand "they sounded just like the record" but it might be interesting to hear another take! Ever been to a Dylan concert? Of course, he is the extreme... some of the songs might not come off so great but sometimes, they create an amazing, spontaneous rendition!