Grappelli and Grisman play "Dawgma" and "Swing '39" on a 1979 episode of the Tonight Show. Sadly, I turned off the VCR after the last song and missed recording a Grappelli-O'Connor duet of "Tiger Rag" that they played over the closing credits. Johnny Carson's reaction at the end is priceless. Stephane Grappelli: violin David Grisman: mandolin Mark O'Connor: guitar Mike Marshall: mandolin Rob Wasserman: bass