Moon River, is a song composed by Henry Mancini with lyrics by Johnny Mercer. It received an Academy Award for Best Original Song for its performance by Audrey Hepburn in the movie Breakfast at Tiffany's (1961). It became the theme song for Andy Williams, who first recorded it in 1961 and performed it at the Academy Awards ceremony in 1962. It also won Mancini the 1962 Grammy Award for Record of the Year and won Mancini and Mercer the Grammy Award for Song of the Year.
Here is an arrangement for Guitar, or Guitar and voice, 3 pages, easy to early intermediate.