James William Guercio
Jim Guercio, born James William Guercio, is name-checked on the cover of "Freak Out!" (1966) under the heading "These People Have Contributed Materially In Many Ways To Make Our Music What It Is. Please Do Not Hold It Against Them". Guercio was hired as a replacement for Ray Collins by FZ to play guitar and sing for the MOI; however, that arrangement was very short lived.
He made his name circa 1970 as producer of very big-selling records by Blood, Sweat & Tears and Chicago Transit Authority. Also produced an album in 1968 called "The Illinois Speed Press" which anticipated the Allman Brothers twin-guitar sound. Parlayed this success into one-shot attempt as film director, "Electra Glide in Blue" with Robert Blake. He also built Caribou Studios in Colorado, where FZ recorded in late '74.