Check out this contest for guitar players using Progression composition 
software.  You download the backing tracks, select one and record your 
accompaniment with a video camera then upload your approx 2 minute clip to 
enter the contest.  Entries close February 29, winners announced March 14. 
Winners and runners up for each of the 4 backing tracks win free software, 
including Progression.  Take a look at the current entries on youtube, see 
link below, and see if you think you can beat them. - CW

http://www.youtube.com/progressionguitar

http://www.myspace.com/progressionguitars