Definition of "basser"

Knowing that a taller pipe must produce a basser sound, the Semites identified the two.

1955, Athene, volumes 16-17, page 4

As the beater increased the pace, the bassers would embellish the rhythm with hand claps and singing, while the seekers would follow the increasing tempo of the stickers [sic] beat, by picking up or intensifying the pace of the movement.

2012, Lenard C. Bowie, African American Musical Heritage, page 244

"Mickey" I hissed. "Lift the fish basket."The bassers nodded approvingly, one giving the thumbs up signal. Then they gunned it.

1994, Louisiana Conservationist, volumes 46-47, page 29