The #1 song on April 21, 1979

Knock on Wood By Amii Stewart

Other #1 songs on April 21, 1979

UK #1 Song

Bright Eyes
Art Garfunkel

#1 R&B Song

Disco Nights (Rock-Freak)
GQ

#1 Country Song

All I Ever Need Is You
Kenny Rogers and Dottie West

#1 Dance Track

Dancer/ Dance to Dance
Gino Soccio

Notable April 21 birthdays in the 1970s

Michael Turner

Born April 21, 1971

Rob Riggle

Born April 21, 1970