Nat Keefe founded Hot Buttered Rum in 1999 and in the last 20 years has played some of the finest stages in bluegrass and folk: Telluride, Newport, Hardly Strictly, High Sierra, and many others. Alex Sharps recently won the California State Fiddle Championship and continues to play in a plethora of groups. This afternoon at the Jupiter promises to be fresh and improvisatory, with some Hot Buttered Rum songs and more.