¿Quién será? - Wikipedia
https://en.wikipedia.org/wiki/%C2%BFQui%C3%A9n_ser%C3%A1%3F
"Quién será?" is a bolero-mambo written by Mexican composer Pablo Beltrán Ruiz. Beltrán recorded the song for the first time with his orchestra in 1953. Pedro Infante, for whom the song was written, recorded it in 1954. . Norman Gimbel took the song, removed the somewhat melancholy Spanish lyrics about a man wondering if he shall ever love again, and wrote brand-new English lyrics about a ...
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