The cloud rap producer teams with Lil B for ‘32 Levels.’New Jersey producer Clams Casino helped invent cloud rap at the beginning of this decade, and on his first full-length LP, 32 Levels, he brings another of the genre’s progenitors, Lil B, along for an astounding four features. The first half of the record was almost a Lil B double album, with the Bay Area rapper dropping overwhelmingly positive and self-affirming verses like, “If you hate Lil B, you better check yourself/’Cuz you could change the world with nobody help,” over Clams’s fragmented, ethereal drums and keyboards that sounded like smoothed-over glitch. After Lil B leaves, the album loses cohesion and becomes a collection of songs, but Clams’s production stays haunting and awe-inspiring throughout.