Sway is the English version of the 1953 Spanish song ¿Quién Será? composed by Pablo Beltrán Ruiz with English lyrics by Norman Gimbel. The original Spanish recording was released in 1953 by Pablo Beltrán Ruiz y Su Orquesta. The English version, titled Sway, became an international hit when Dean Martin released it as a single in 1954, and it was later popularized again by Bobby Rydell in 1960. The tune is a Latin pop / mambo standard with a catchy dance rhythm and has been performed by artists such as Frank Sinatra, Dean Martin, and Michael Bublé. Over the years it has appeared on various albums and compilations, sung by different artists across genres.