"Schpiel" Slang referring to a rant or monologue.

Used to describe the proten rap music vocalizations in the 1960's, such as by The Last Poets.

Possibly from a Yiddish word used by prison culture, an evolutionary stage between rap and hip hop and the earlier chain gang songs influenced by gospel and Afro-Caribbean music.

Also used by Lenny Bruce to describe his beat era comedy routines.