Here is something funny that Eddie Jordan arranged after the 1995 Brittish GP.

Look in the video from 2:21 to 3:01.
And you will see many F1 drivers play in a band.

David Coulthard on Samba Balls, Damon Hill on Guitar, Johnny Herbert Singing, Mika Hakkinen on that thing with the things. xD and more!

http://www.youtube.com/watch?v=tGrzIsgqmQY

Kenny Brack had a band, he played before retirment a few times before the Aussie GP