Dupri thought of releasing "My Boo" as the fourth single from Confessions once "Confessions Part II" would be leaving the charts. LaFace Records sent "My Boo" to US contemporary hit radio on August 29, 2004, and to US urban contemporary radio on August 30, 2004. The single was released in the United States as a 12" single on September 21, 2004. It was a double A-side with "Confessions Part II" when it was released in the United Kingdom on November 1, 2004. Composition and reception "My Boo" is a hip hop-tinged R&B song with a mid-tempo melody. It is composed in the key of D minor, in common time. The lyrics are constructed in verse-chorus-chorus form. Usher starts the intro, and Keys followed her rap-intro, with background vocals from Usher. He proceeds to the first verse and chorus, leading to Keys singing another chorus, altering some of the lyrics of the original chorus to create a dialogue. Keys sings the second verse and Usher for the chorus, with background vocals from Keys. Keys repeats her version for the chorus. The song breaks with Usher and Keys singing "My oh, My oh, My oh, My oh, My Boo", one after the other. Usher repeats the chorus again, and they sing the intro of Keys. The 1977 song "He's All I’ve Got" by Love Unlimited is sampled in the song The song received positive reviews from critics. Jon Caramanica of Rolling Stone found the duet sentimental. At the 2005 Grammy Awards, it was nominated for Best R&B Song and Best R&B Performance by a Duo or Group with Vocals; to which it won the latter and the former was awarded to Alicia Keys' song, "You Don't Know My Name". Usher and Keys won for Best R&B/Soul Single by a Duo or Group during the 2005 Soul Train Music Awards. In 2011, Billboard ranked the song seventh on a special The 40 Biggest Duets of All Time listing. Chart performance "My Boo" was successful in the United States, living up to the chart performances of "Yeah!", "Burn" and "Confessions Part II". The single debuted on the Billboard Hot 100 twenty-nine, the highest U.S. entry among all singles released from the album. It entered the top ten, two weeks after, and peaked at number one during its eighth-week stay on the chart. The single remained on the top for six weeks, beating its predecessor