After producing the James Gang's first three albums, he followed singer-guitarist Joe Walsh when he left the band, first as a solo artist with the Szymczyk-produced albums "Barnstorm" (the first recorded at the Caribou Ranch studio) and "The Smoker You Drink, the Player You Get" and later with the Eagles. His most prolific collaborations have been with Walsh; the two have made over 15 albums together in many settings. Walsh himself moved to Boulder, Colorado in 1971 in order to work with Szymczyk and the location would inspire one of Walsh's biggest solo hits, 1973's "Rocky Mountain Way". Besides work with Walsh in his band The James Gang and as a solo artist, he also brought Walsh in to work on several albums he was doing with other musicians, using him as a session player for the B. B. King album "Indianola Mississippi Seeds" and the Michael Stanley albums "Michael Stanley" and "Friends and Legends". It was at Szymczyk's suggestion that the Eagles bring in Walsh to give them a "rock" edge; Walsh has remained a core member of the band to this day.