Question: Untitled (or box set) is a box set compilation of songs released by which British musician, songwriter, and producer under the pseudonym Bass Communion, which English musician and record producer, most associated with the progressive rock genre?
Sentence (from "Untitled (Bass Communion Box)"): It contains many rarities from the last 15 years of Steven's ambient and drone work, especially from vinyl only editions of Bass Communion albums.
Relevant evidence: No