My Boo is a song by Usher and Nicki Minaj.
A song may be for a solo singer, a lead singer supported by background singers, a duet, trio, or larger ensemble involving more voices singing in harmony, although the term is generally not used for large classical music vocal forms including opera and oratorio, which use terms such as aria and recitative instead
 Songs contain various forms, such as those including the repetition and variation of sections

