“London's Erased Tapes seldom makes much of a dent on decibel meters. Most of the label's roster—the Icelandic composer and Chopin specialist Ólafur Arnalds; jazz trio Dawn of Midi; experimental vibraphonist Masayoshi Fujita; and especially the liquid-fingered pianist Nils Frahm—favor acoustic instruments and hushed tones. Not so for Rival Consoles, aka Ryan Lee West, a London producer who was a gu”