2021, Jehnie I. Burns, Mixtape Nostalgia: Culture, Memory, and Representation, page 138:
[…] mutating into all-star line-ups of emcees spitting hot bars over familiar beats, then to a single crew spitting bars over familiar beats, then eventually to a single crew (or artist) spitting bars over unfamiliar beats.
'2022, Shanté Paradigm Smalls, Hip Hop Heresies: Queer Aesthetics in New York City (page 89)
Here was an emcee not only capable of spitting “bars” (good rhymes), but thoughtfully creative in her meditation on Black heterosexual relations.