"Sway" is the English version of "¿Quién será?", a 1953 mambo song by Mexican composer and bandleader Pablo Beltrán Ruiz. In 1954 the English lyrics were written by Norman Gimbel and recorded by Dean Martin (his recording reached number fifteen on the Billboard magazine best-seller chart and number six on the UK chart). Since then the song has been recorded and remixed by many artists (see discography below).

The English version begins: "When marimba rhythms start to play, dance with me, make me sway". Mexican version begins: "Quien será el que me quiere a mi? Quien será?, quien será?".
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When the Rymba rythm starts to play
Dance with me, make me sway
Like the lazy ocean laps the shore, hold me close
Sway me more.(3x)

cha cha cha cha cha!
cha cha cha cha cha cha cha
cha cha cha cha cha
cha cha cha cha cha cha cha

When the Rymba rythm
When the Rymba rythm starts
When the Rymba rythm starts to play
Dance with me, make me sway
Like the lazy ocean laps the shore, hold me close
Sway me more.(4x)