With singer and group co-founder Tony Butala currently celebrating his astonishing 61st year with the trio, the beloved pop vocalists of The Lettermen will return to the Circa '21 Dinner Playhouse on May 13, their annual concert engagements overflowing with timeless hits such as “When I Fall in Love,” “Put Your Head on My Shoulder,” “Hurt So Bad,” and “Shangri-La.”