Pet Sounds in the Key of Dee is a mashup album by United Kingdom-based record producer Bullion,[1] released for free online download in June 2007.[citation needed] It is a tribute to American rapper J Dilla and the album Pet Sounds (1966), originally recorded by the Beach Boys.[2] It is described by the online publication Gorilla vs. Bear as a "more adventurous version of The Grey Album, but with J Dilla and the Beach Boys standing in for Jay-Z and the Beatles".[3]