A Top 40 Song in 8 Hours

http://www.youtube.com/watch?v=5PRKfj_5Oso

Pretty amusing.  It would have been interesting to see how various artists did it, using this video process and then compare.  Lennon/McCartney, King/Goffin, John/Taupin, Rundgren, Leiber/Stoller, Newman, Nilsson, Dylan, Springsteen, etc. 



(Thanks for the link, Nick!)