Willie Nelson's career as a songwriter in Nashville peaked in the late 1960s. As a songwriter, he had written a number of major pop-crossover hits, including "Crazy" for Patsy Cline and "Hello Walls" for Faron Young, but as a singer, he was getting nowhere. He left Nashville in 1971 to return to Texas. The musicians he met in Austin had been developing the folk and rock influenced country music that grew into the outlaw genre. Performing and associating with the likes of Jerry Jeff Walker, Michael Martin Murphey and Billy Joe Shaver helped shape his future career.