The Nonce is a rap duo from Los Angeles, California that was mainly active in the mid 90s. Its members included Nouka Basetype (a.k.a. Sach) and Yusef Afloat, the latter of whom passed away. Their album World Ultimate, which featured production from EPMD member Erick Sermon, was released in 1995 and is considered an underground classic. Because it is out of print and finding a tangible copy of the album is very difficult, some consider it a collector's favorite.