Thinking they are temporarily "free" from their wives, Fred and Barney head to the Rockland nightclub to see Fred's old friend, the jazz trumpeter Hot Lips Hannigan .
" Hot Lips Hannigan " is the of the classic animated series, The Flintstones . It originally aired on October 7, 1960 , and introduces the series' blend of modern suburban life with prehistoric settings. Plot Summary
Fred and Barney join Hannigan on stage for a jazz rendition of " When the Saints Go Marching In ".