The #1 song in the UK on May 21, 1971

Knock Three Times

Tony Orlando and Dawn

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Notable May 21 birthdays in the 1970s

Anika Moa

Guitarist
Born May 21, 1980

Maria Fernanda Candido

Soap Opera Actress
Born May 21, 1974

Edward Watson

Dancer
Born May 21, 1976

Anthony Mundine

Boxer
Born May 21, 1975

Paolo Montalban

Movie Actor
Born May 21, 1973

Angelica

Pop Singer
Born May 21, 1972

Robbie Magasiva

Movie Actor
Born May 21, 1970