In 1965, Paul went into semi-retirement, although he did return to his studio occasionally. He and Ford had divorced at the end of 1964 after she got tired of touring. One of Paul's most recognizable recordings from then through the mid-1970s was an album for London Records/Phase 4 Stereo, "Les Paul Now" (1968), on which he updated some of his earlier hits. Paul played the initial guitar track, and George Barnes laid down the additional tracks while Paul engineered in his home studio. He also recorded two albums, "Chester and Lester" (1976) and "Guitar Monsters" (1978), for RCA Victor, comprising a meld of jazz and country improvisation with guitar virtuoso Chet Atkins, backed by some of Nashville's celebrated studio musicians.