The cover art for the band's 2004 album Three Cheers for Sweet Revenge.
In 2003, while recording the Manhattan Demos for the album "Three Cheers for Sweet Revenge", My Chemical Romance recorded a track called "Sister To Sleep". It was never officially released to the public but was performed at a live show sometime in that same year. As a result of this, a live bootleg has unofficially circulated onto the internet, and is available to listen to on YouTube. However, the studio version remains lost, even to the band members themselves.
Sometime in 2013, the ex-drummer from My Chemical Romance, Matt Pelissier, leaked three random 15-second parts of the song on Twitter before quickly taking it down and claimed that it was on an EP that contained some other Revenge demos and that there were a total of six copies of the EP in existence. However, he could not upload the full song due to legal reasons, on December 30th, 2018, an Instagram user called Solongandfortnite posted the 3 parts that Pelissier had leaked all those years ago. A YouTube video was made with all three clips, but the video is now unavailable and cannot be viewed. It is not known whether the video is still available through the Wayback Machine. A user by the name of Dave Smith uploaded a YouTube video of the three clips on June 2nd 2020.[1]
On October 17, 2022, during the band's reunion tour, the band played the song for the first time in nearly twenty years. It was thankfully recorded and can be found on YouTube.