About Grady Chapman
Grady Chapman was best known as the American lead singer of doo wop group The Robins. Grady Chapman (October 1, 1929 – January 4, 2011) was best known as the American lead singer of doo wop group The Robins. He still performed as Grady Chapman & The Robins with various back-up musicians, until his death, from congestive heart failure. Chapman would later become a member of one of the Coasters' many spin-off groups, The Coasters Mark II, which included Bobby Nunn, Bobby Sheen, and Billy Richards, Jr. Chapman would also substitute for Carl Gardner a few times in the 1990s and 2000s with The Coasters.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.