In 1966, Yester was asked to join the group The Association when their original rhythm guitarist Bob Page left two weeks after the band formed: "I'd gotten an audition at the Troubadour and played Wednesday nights at the Ice House. Bob Stane, the owner, pulled me aside and said, ‘Good news, these guys have put together a new group’ – which was The Association, who had only been together for two weeks – ‘and they want you to call them.’ They were looking to replace one of the guys; he was a banjo player with a bit of an attitude. Then, I sang for them, and they sang for me. Jules told me, ‘Come back in three days and you can move in’. So, I moved in, and that was my beginning with the band."The group rehearsed for six months and were eventually signed to Jubilee Records:"Before we started performing anywhere, we would spend six months of the year just on our act. We rehearsed, wrote, and worked on choreography.