I have sometimes wondered why he never went so far as to play it professionally, that is, write some songs, make some music, cut an album, get paid for it. (P.S. "King Tut" doesn't count).
Well folks, Steve Martin has just released a brand new album called The Crow: New Songs for the 5-String Banjo, consisting of 15 tracks of original bluegrass music, featuring himself on the banjo and numerous other musicians providing accompaniment and vocals.
You can download track #1 for free by clicking on Daddy Played the Banjo. Full album link below.