Margo J. Sylvia; Sang 1950s Hit With the Tune Weavers

Margo J. Sylvia, 55, a pop singer best known for her hit “Happy, Happy Birthday, Baby” with the 1950s group the Tune Weavers. The group toured with the “Happy Birthday” song for months before a disc jockey in Philadelphia played the song and was deluged with phone calls. The group soon signed with Chess Records in Chicago, and the record was released on their Checker label. In August, 1957, “Happy, Happy Birthday, Baby” became a gold record, reaching No. 3 on the rhythm and blues chart and No. 5 on the pop chart. After that, the group left Checker records, never to have another hit. After the demise of the group, Sylvia worked as a solo performer, moving from Boston to San Francisco in 1981 and then to San Diego in 1990, where she died Oct. 25 after a heart attack and stroke.