Same re: Albert Einstein. They have tons of unreleased material too. There's another P solo and a whole Mobb Deep album produced by Al, and there's 2 more P solos Heglian Dialectic 2 and 3, both of which have Al on them. P's estate issues are super messed up right now. Hopefully they get cleared up. As of now you can't find any of P's solo material besides maybe Return of the Mac on any streaming services.
Yacht Rock 2 was fire breh. Way better than the first one. It's on all the streaming platforms too
Albert Einstein is an incredible piece of work, RIP Prodigy