[Download] The Let Go "Nightfall" Feat. P.O.S. Rocko April 5, 2010 Stef (P.O.S.) drops a nice guess verse on The Let Go's (producer, Captain Midnite, and emcees Kublakai & Type from Seattle) latest tune, NightFall. Shouts to 2DopeBoyz for the heads up on this one. The Let Go – Nightfall f. P.O.S.