Three great Zappa jazz-fusion albums, Waka/Jawaka, Hot Rats and Grand Wazoo. The latter is the best of the three. All three are must-haves if you want to explore Zappa. Another must-have is Jazz From Hell but it's a challenging listen! There's one more must-have. Apostrophe is one of those rare instances where pop meets superb composing and musicianship. Much of Zappa material became silly anti-establishment expoitation and goofyness. Some of it became very popular and FZ made a fortune from it. More power to him I say!!