Scat chorus
A
scat chorus is an example of
Mouth music: in other words a string of meaningless syllables that carry a
melody such as
do-wah-diddy-diddy-dum-diddy-doo or
ooh-eee-ooh-ah-ah-ting-tang-walla-walla-bing-bang, though it's often
improvised on the spot, rather than codified as those two examples.
Ella Fitzgerald, among others, was known for
scat singing.
