A native of Appleton, Wisc., Tim Mueller spent two years at Iowa State, dropped out, joined a band and moved to Connecticut. “The band broke up when the bass player joined the Air Force,” says Mueller, who stayed on in Connecticut, found work at the post office, got married and had a daughter. After they discovered Oregon on a vacation trip, the family moved west in 1991. “Klamath Falls had the only postmaster in Oregon who would take a transfer,” says Mueller, who got divorced three years later, then transferred to Springfield. In 1997 he advertised for a housemate and found Michelle Jones, who was working with Steve Brown on their first autism retreat. “I helped because I had a computer and wanted to learn to use it,” he says. “The three of us started KindTree Productions, aka Autism Rocks.” Fifteen years later, Jones and Brown have moved on, but Mueller, now retired and remarried, remains as secretary/treasurer of KindTree - Autism Rocks. “Last summer we had 145 people at our family camp,” he says. “Every year, the magic happens: Someone has a breakthrough.” On Friday, May 4, the public is invited to The PROM, a benefit event in the Vet’s Club Ballroom, with music by Etouffee and DJ Elian, hosted by Queen Holly GoSlugly. Find details at kindtree.org Still a musician, Mueller will perform with his new band, Steel Wool, at the Saturday Market on June 23.