Sing (My Chemical Romance song)

"Sing" (stylized in all caps) is a song by the American rock band My Chemical Romance from their fourth studio album, Danger Days: The True Lives of the Fabulous Killjoys (2010). "Sing" is a pop, pop rock, and emo song, written after the band placed an emphasis on experimentation when writing new music. The track was written by Frank Iero, Ray Toro, Gerard Way, and Mikey Way, and was produced by the group alongside Rob Cavallo.

The track was originally published on the band's Myspace page on November 3, 2010, and was released on iTunes the following day. "Sing" was a commercial success, including in the United Kingdom where it topped the UK Rock & Metal Singles chart for four weeks and reached number 50 on the UK Singles chart. The song also charted in the United States, where it peaked at number 4 on the Hot Rock & Alternative Songs chart, number 10 on the Adult Pop Airplay chart, and number 58 on the Billboard Hot 100. The song was certified gold in the United States by the Recording Industry Association of America (RIAA) and silver in the United Kingdom by the British Phonographic Industry (BPI).

A music video for "Sing" was released on November 18, 2010; co-directed by Gerard Way and P. R. Brown, it is a sequel to the video for "Na Na Na (Na Na Na Na Na Na Na Na Na)" and features the band as the Killjoys, a group of rebels, who infiltrate a corporation's facilities to rescue a girl. Additionally, following the 2011 Tōhoku earthquake and tsunami, the band released a re-recorded version of the track, titled "#SINGItForJapan", as a charity single. "Sing" received mixed-to-negative reviews from music critics, who panned its pop sound as a departure from the band's prior rock sound. "Sing" was included on the setlist of the World Contamination Tour, the band's 2010–2012 concert tour in support of Danger Days.