The #1 R&B song on May 31, 1955

Unchained Melody By Roy Hamilton

Other #1 songs on May 31, 1955

#1 Hit Song

Cherry Pink (and Apple Blossom White)
Perez Prado

UK #1 Song

Cherry Pink (and Apple Blossom White)
Eddie Calvert

#1 Country Song

In the Jailhouse Now
Webb Pierce

Notable May 31 birthdays in the 1950s

Jim Craig

Born May 31, 1957

Vicki Sue Robinson

Born May 31, 1954

Gregory Harrison

Born May 31, 1950