Letters by Hikaru Utada

"Letters" is a song by Japanese-American musician Hikaru Utada. It was released as the fourth and final single from Utada's third album, "Deep River" as a double A-side single with the song "Sakura Drops" on May 9, 2002.The song was written and co-produced by Utada. Critical reception to the song was positive, with critics praising how its passionate and upbeat melody contrasted with its melancholy lyrics. Commercially, the single was a success, debuting at #1 on the Oricon Singles Chart .