Though I rarely perform outdoors due to chronic health problems I did a small gig last year at a houseparty. Rather then being lumbered with keyboard, guitar ,etc. I used prefab backing tracks,(karaoke tracks if you like). Afterwards I presented those present with a recording of these and here is a short compilatiotn of that virtual CD:
http://youtu.be/aoFuDN3bHPw

As to the discussion here on a few other threads about the future of the OMB arranger player I think we are definitely entering into a new era. First of all the top arranger keyboards ( PA3X, Tyros 5, Audya) do not leave all that much to be desired short of the real instruments they try to emulate.The audiences want to be entertained and basically want to have a " feast of recognition". Hence the success of the many songstyles used by (in particular) Yamaha Tyros players. Personally I find little merit in playing a song with a song styles that hardly differs from the orginally track. No one is going to stand in awe just because you master the four or five chords to play them. In this instance you might as well resort to Backing Tracks, as did Col recently. Of course if you do not sing you simply have to rely on keyboard or whichever instrument it is that you master. So imho the days of the keyboard entertainer as a "coverband " are getting numbered. On the other hand the arranger keyboard remains an incredible tool to do with it what its name suggests: ARRANGE.
That is not taking al kinds of prefab songstyles but use its potential to create, tweak, etc. within the confines of your own home/studio, either with existing songs or with material composed by yourselves.Who knows, you might be the next Irving Berlin, Cole Porter or Paul McCartney

regards,
John