 Drummers such as Kenny Clarke and Max Roach were extending the path set by Jo Jones, adding the ride cymbal to the high hat cymbal as a primary timekeeper and reserving the bass drum for accents.Bass drum accents were colloquially termed "bombs," which referenced events in the world outside of New York as the new music was being developed.The new style of drumming supported and responded to soloists with accents and fills, almost like a shifting call and response.