Sorry, but I think that anyone using backing tracks is taking the piss, cheating and ripping off the audience, if you're not good enough to play it live then don't play it.
Supported [font=Arial, sans-serif]The Rockin' Berries not so long ago, not only did they turn up late, but insisted on using their own P.A. just so the could use backing tracks. they ended up playing only a 30 minute set of 60s covers, not even their own hits, all with backing tracks and still walking away getting their full pay. [/font]
[font=Arial, sans-serif]At the same venue the following year, we supported the [/font][font=Arial, sans-serif]Abba tribute band Abba Arrival. Totally mimed the whole way through, full band as well. Pointless, unless they were incapable of actually playing it live. [/font][font=Arial, sans-serif]Both bands won't be playing at that venue again[/font]
[font=Arial, sans-serif]If you have to use backing tracks to make yourselves sound good, then give up and let those who can play live do the gigs.[/font]