|Jim Horn was born in Los Angeles, California.
Horn toured with Duane Eddy playing saxophone in Eddy's band, The Rebels.
In the early 1960s, Horn joined the band for the television show Shindig!. he also started playing sax for Phil Spector's Wall of Sound recording sessions. Horn played on the Righteous Brothers's "You've Lost That Lovin' Feelin'" and Tina Turner's "River Deep-Mountain High".
During the 1960s, Horn often played sax or flute for several sessions a day. He appears on songs by many arists including the Beach Boys, Van Dyke Parks, the Carpenters, and the Mamas and the Papas.
In the 1970s, Horn played during sessions for Leon Russell, Elton John, Warren Zevon, John Denver, Steely Dan, George Harrison, Joe Cocker, and others. He joined Cocker on the infamous Mad Dogs and Englishmen tour and appeared at Harrison's 1971 benefit Concert For Bangladesh. He also toured with Harrison in 1974.
In the early 1990s, Horn moved to Nashville, Tennessee. He performed the solo on Ronnie Milsap's hit "Lost In The Fifties Tonight (In The Still Of The Night)." He also played sax on "Angel of Harlem" for U2. He also recorded with Garth Brooks and Vince Gill.
Horn has recently recorded several solo albums including A Tribute to John Denver.