You haven't heard it before because Leo Kottke never got mainstream credit he deserved for his peerless talent on acoustic -- especially 12-string -- and his songwriting. "Up Tempo" has to be at least 40 years old; and it never got any play on mainstream radio except in local markets like Minnesota and the Deep South -- and among acoustic purists. What's always amazed me about Leo is he always sounds like at least two people are playing at the same time.