The Hamilton Peach evolved from Fremont's Roamin V. Roamins Jeff Yost (keyboards) and Mike Carter (drums) joined with Corby Hebron, a guitarist from Clyde, and John Ivy, a bass player from Bellevue. Jeff had played guitar in the Roamin V but switched to keyboards in the Hamilton Peach. Mike Carter moved from bass to drums.
The Hamilton Peach played the north central and western circuit, and in the summer of 1968 recorded two of Jeff's songs, the midtempo vocal "With the Girl That You Love" and the fast organ driven instro "One Way Ticket Down" at Courier, with the 45 issued on CEI records. The 45 got some airplay in the region.
In late '68 or '69 guitarist Jim Hoburg joined the band and they changed their name to Wolfgang. Wolfgang played a harder edged sound and opened for several touring acts in Northwest Ohio. The group split up in 1969.
Jeff has continued to play music to present day, in a long list of bands and projects including Master Bates and the Beat Boys.