Besame Mucho is one of the most frequently recorded, and hence most recognizable songs in the world. If you’re wondering, Cesaria Evora’s version is of course the best. The Beatles also recorded a version – in English – back in the early days. Actually it was one of their earliest recordings, and they used it to audition for Decca. It never made it onto any albums, but you can hear it on the Anthology. There’s also an Elvis version.