There's nothing like the refined, ageless cool of a swing classic. “Wham (Re-Bop-Boom-Bam)” is about as “hep” as it gets, with a catchy melody and colorful lyrics that offer a snapshot of the era's finest musical slang. Roger Emerson's arrangement is patterned after the 1939 version by Mildred Bailey (as featured in the TV series Lessons in Chemistry), reflecting its tight jazzy harmonies and snappy syncopated rhythms.