40 Ounces (a.k.a. The Boom) is an unreleased track by poet/rapper Ninety-9 (real name : Dietra Moses) Prince (as ) worked on in late-Spring – early Summer 1993, at Paisley Park Studios in Chanhassen, Minnesota (during the same set of sessions as Simlac, The Mood For Love, Stained Glass and Three Shots). There might be other versions of the song with her own backing music as the five tracks known to have been worked or re-worked by Prince were registered on September 1st 1993 as musical compositions by Dietra Moses alone at the Library Of Congress.
It is unclear whether this short-lived collaboration was intended to lead to an album or to a particular project. Prince sampled the tracks heavily in 1993-5 recordings, however. 40 Ounces was sampled as a loop in many released versions of Space and Free The Music. The track itself, however, remains unreleased.