With Mike D’s Thank You, ascribed. to the appellation Mike D 5D, we finally have a solo debut from a Beastie Boy. That’s changed with Thank You, the first solo work from Mike D, ascribed to the appellation Mike D 5D. Though he hasn’t been too far from music, producing records for Portugal. The Man and Soft Play, the album follows a long period of creative grief. But the work of his sons Davis and Skyler Diamond and their circle of friends have drawn the wildest Beastie back to writing and performing once again.