I went to see a singer working self contained (using backing tracks) a few days ago.
She was a good looking girl, with a good voice, nice stage presence and a good P.A. system.
Did I enjoy the show?
So what was the problem you're probably asking?
The problem was her backing tracks. She had paid great attention to everything in her act except her tracks.
Don't get me wrong some of them were very good, but that was the problem. In amongst the few good quality tracks were tracks from karaoke discs which had fade outs (very unprofessional), tracks made directly from midi files which included the melody line and badly recorded tracks.
Most of the tracks played at different volumes so she spent most of her act making adjustments at the mixer.
I always advise singers to get all their tracks from one source, that way they are guaranteed to be the same quality and play at the same volume.
For great quality backing tracks, listen to some of the samples at mp3backingtrax.com and you'll see what I mean.
This cabaret act had obviously spent a lot of time and effort getting her act polished and yet it was all for nothing as it was spoiled by bad music.
Don't let your stage performance be ruined by inferior backing tracks.