The emergence of young jazz talent beginning to perform in older, established musicians' groups further impacted the resurgence of traditionalism in the jazz community. In the 1970s, the groups of Betty Carter and Art Blakey and the Jazz Messengers retained their conservative jazz approaches in the midst of fusion and jazz-rock, and in addition to difficulty booking their acts, struggled to find younger generations of personnel to authentically play traditional styles such as hard bop and bebop. In the late 1970s, however, a resurgence of younger jazz players in Blakey's band began to occur. This movement included musicians such as Valery Ponomarev and Bobby Watson, Dennis Irwin and James Williams.