Now roughly 20 years young, Tempered Steel features Ffej, Frank Junk, and Dennis Rea playing amplified, electronically enhanced thumb pianos. The trio thumbs its collective nose at musical convention with seamless improvisations conjuring everything from phantom harpsichords and subterranean percussion to vintage musique concrete. The group has played Seaprog, the Olympia Experimental Music Festival, Northwest Folklife Festival, the Zero-G Concert Series, and scads of underground haunts in the Pacific Northwest. Recommended to partisans of Harry Partch, John Cage's prepared piano music, and Konono No. 1. Tempered Steel's eponymous album is available through the usual streaming services.