In 1969, Glen Campbell continued the streak of Webb hits with the gold record "Galveston" and "Where's the Playground Susie". Webb and Campbell had first met during the production of a General Motors commercial. Webb arrived at the recording session with his Beatle-length hair and approached the conservative singer, who looked up from his guitar and said, "Get a haircut." That same year, two Webb songs became hits for the second time with Isaac Hayes' soulful version of "By the Time I Get to Phoenix" and Waylon Jennings' Grammy-winning country version of "MacArthur Park". On Frank Sinatra's acclaimed 1969 album "My Way", the singer dove deeper into Webb's songbook with a version of "Didn't We?" -- a number that was originally done by Richard Harris in 1968 and released as the B-side of "MacArthur Park." Webb finished up the year by writing, arranging, and producing Thelma Houston's first album, "Sunshower". As the decade came to a close, so too did Webb's string of hit singles. He began to withdraw from the formulaic process in which he worked and began to experiment with his music. He started work on a semi-autobiographical Broadway musical called "His Own Dark City", which reflected the emotional displacement he felt at the time. He also wrote music for the films "How Sweet It Is!" and "Tell Them Willie Boy Is Here".