"The Nearness of You" was a piece of music written in 1938 on Earth.
In 2364, William T. Riker played "The Nearness of You" on his trombone for Minuet while they spent time together in the Bourbon Street Barn holoprogram. (TNG: "11001001")
In 2368, Riker also started to play the first opening notes for this music piece on his trombone in Ten Forward. (TNG: "Conundrum")
"The Nearness of You" was written by Hoagy Carmichael and Ned Washington. The music piece can also be heard in the score in "11001001" when Riker re-enters the holodeck to find that Minuet is no longer there.