pep
n.— «The introduction of live vocals to the sound systems—which began innocently as just another way to top Dodd?s competition—started in 1956 when Downbeat’s Winston “Count” Machuki stepped out from behind his turntable and cracked jokes, recited slang and American jive, and peppered the records with vocal tics (called “peps”) that shared elements with beatboxing.» —“Producer Clement “Coxsone” Dodd Dead at 72″ by Scott Plagenhoef Pitchfork May, 2004. (source: Double-Tongued Dictionary)