Don't Forget (song)  "Don't Forget" is a song performed by American singer Demi Lovato, from her debut album of the same name. It was written by Lovato and the Jonas Brothers, who co-produced the song with John Fields. It was released as the album's third and final single on March 16, 2009, through Hollywood Records. The inspiration of the song came from Lovato falling in love with someone who later left her. According to Lovato, it is one of the songs on the album that she most relates to. Musically, "Don't Forget" is a midtempo glam rock ballad that features Lovato singing with breathy falsetto vocals. An accompanying music video was released in March 2009. Upon the release of the album, "Don't Forget" was well-received from music critics, who noted the transition from her "tween sound" to more mature material. The song achieved moderate commercial success, reaching number forty-one on the "Billboard" Hot 100. It also reached number seventy-six on the Canadian Hot 100. To promote the song, Lovato has performed the song numerous times including on "The Ellen DeGeneres Show". "Don't Forget" was written by Lovato along with the Jonas Brothers, who produced it with John Fields. The song features Dorian Crozier and Michael Bland on drums, and Fields on bass, guitars and keyboards. Nick Jonas also played the guitar and percussion on the song. The song is registered as "Did You Forget" with the Broadcast Music, Inc. Lovato has stated that "Don't Forget" is one of the songs on "Don't Forget" that she relates to the most, and that she felt "a lot of emotion while recording it". In an interview with PopEater, she elaborated, "Everyone goes through the experience of falling in love, but then the other person just walks away, and goes somewhere else. I went through an experience like that and wanted to write about it. I got over it, and now a year later I don't have those feelings about that person anymore." The song and "La La Land" were included as bonus tracks on European editions of her sophomore album "Here We Go Again". "Don't Forget" is a midtempo glam rock ballad sung with vulnerable and breathy vocals in a falsetto tone. According to the sheet music published at Musicnotes.com by Sony/ATV Music Publishing, the song is set in common time with a metronome of 92 beats per minute.