Mystery Jets are an English indie rock band, formerly based on Eel Pie Island in Twickenham, London. The band was formed by Henry Harrison (lyrics, piano), Blaine Harrison (vocals, guitar and keyboards) and William Rees (guitar, vocals) when the boys were still at school and would send each other songs on cassettes. The other member is Kapil Trivedi (drums).
The band's debut UK album, Making Dens, was released on 6 March 2006. On 18 September 2006, the band put on a tribute show to Syd Barrett, one of their biggest influences. The show was put on at the Union Chapel in Islington, London. Performers were Kid Harpoon, Lupen Crook, Kate Nash, Dan Treacy and the Television Personalities, Drew from Babyshambles, Ben from SixToes, Lucas from the Cazals and Mystery Jets. The groups created a special fanzine made for the show with entries from all the performers and artwork by the bands.
Their second album, Twenty One, was released on 24 March 2008. Produced by Erol Alkan and mixed by renowned producer Nick Launay, it was preceded by the single "Young Love" featuring Laura Marling, released on 10 March 2008. The second single released from the album was "Two Doors Down". It reached 24 in the U.K charts, their highest position so far. The album represented a change in the band's sound, shifting from psychedelic and progressive rock towards more of a pop direction.
In April 2010, Mystery Jets announced their third studio album, Serotonin. The album was released on 5 July 5, 2010 and was produced by Chris Thomas. The working title was Luminescence but the name was changed later on. Blaine has said that he wanted this album to be "quintessential Mystery Jets record." A promotional single, entitled "Flash A Hungry Smile", was made available on the band's website for free. The first single to be released from the album, "Dreaming Of Another World" was added to BBC Radio 1's B Playlist in May 2010 and was also released on 5 July 2010. On 5 July, Mystery Jets performed an instore session at Rough Trade East for their album release. A limited edition 12" was released as well as CD format and digital download. In 2010, the band featured on The Count & Sinden track, "After Dark".