An iconic American songwriting duo, Henry Mancini and Johnny Mercer left an indelible mark on 20th-century jazz and popular music. Mancini, a prolific composer, and Mercer, a masterful lyricist, collaborated on numerous timeless hits, including the Oscar-winning "Moon River" and the iconic "Days of Wine and Roses." Their partnership defined an era of sophisticated and memorable film and popular songs, earning them widespread acclaim and enduring popularity.