be bop wop a loo bop a lop bam boom
be bop bop a loo bop a lop bam boom
a-wop bop a loo bop a lop bam boom
a-wop bop a loo boo a lop bam boom
Google reveals that all of these have proponents as versions of the famous Little Richard refrain from 'Tutti Fruiti' (supposedly an onomapotpoeic rendering of a drum roll).
All I ask for is a little consistency, people.