2007 four CD Proper box featuring 108 tracks recorded by the famed duo. Les Paul pioneered electric guitar design and multi-track recording and along the way invented the synthesizer. He was also a very fine guitarist himself and with vocalist Mary Ford had considerable chart success with songs of varying styles, all included here. Les Paul's influence as a guitarist is acknowledged by musicians ranging from B.B. King, Jerry Garcia and Eric Clapton to James Burton, Frank Zappa, Keith Richards and Jeff Beck.