When vocalists improvise using nonsense syllables. Rumoured to have originated on the Hot Five song Heebie Jeebies when Louis Armstrong forgot his lyrics.

singing jazz; the singer substitutes nonsense syllables for the words of the song and tries to sound like a musical instrument

Improvised vocals using nonsense syllables

A jazz term referring to a technique where singers use wordless sounds and improvised notes, often imitating jazz instruments. Frank Sinatra's famous "doo-be-doo-be-do" is an example of scatting.

Improvisational technique used in jazz ("bop") singing, consisting of wordless variations of sounds, often in imitation of instrumental jazz passages.