He has worked with musical acts including Otis Redding, Sam & Dave, Percy Sledge, Johnnie Taylor, Clarence Carter, Arthur Conley, Al Green, Joe Tex, Z.

Z. Hill, Candi Staton, Albert King, William Bell, Eddie Floyd, Etta James, Boz Scaggs, Lynyrd Skynyrd, Outlaws, and September Hase.

Walden worked with Lynyrd Skynyrd until 1974, during which time he published the Southern Rock classics "Freebird", "Sweet Home Alabama", "Gimme Three Steps", and "Simple Man".

During his time with Lynyrd Skynyrd, vocalist Ronnie Van Zant introduced Walden to up-and-coming Southern rock band Outlaws.

[2] After Outlaws disbanded in 1999, Walden represented southern artists Night Train and Chris Hicks before officially retiring.