“Don’t Know Why” is a song written and composed by Jesse Harris that originally appeared on his 1999 album, Jesse Harris & the Ferdinandos. A cover of the song was the debut single of American singer Norah Jones from her debut studio album, Come Away with Me (2002).
Jones’ version of “Don’t Know Why” was released on January 28, 2002, peaked at number 30 on the US Billboard Hot 100 and was a critical success. The single went on to win three Grammy Awards in 2003 for Record of the Year, Song of the Year, and Best Female Pop Vocal Performance. It remains Jones’s biggest hit single in the United States to date, and her only one to reach the top 40 of the Billboard Hot 100. “Don’t Know Why” was also a modest hit abroad, reaching number five in Australia, number 24 in New Zealand, and number 59 in the United Kingdom. The song was ranked number 459 in Blender magazine’s “500 Greatest Songs Since You Were Born”.
Jones’ piano-playing has been compared to that of Floyd Cramer, having a “style and grace, a musical maturity not found in many keyboard players today.”