Background: Kasabian ( k@-SAY-bee-@n) are an English rock band formed in Leicester in 1997. The band's original members consisted of vocalist Tom Meighan, guitarist and vocalist Sergio Pizzorno, guitarist Chris Karloff, and bassist Chris Edwards. The band's line-up was completed by drummer Ian Matthews in 2004 after a string of session drummers. Karloff left the band in 2006 and founded a new band called Black Onassis.
Context: Kasabian started work on their fourth album, Velociraptor!, in November 2010 with Dan the Automator as producer. It was revealed in a number of interviews that some songs were already written. One track, titled "Green Fairy", which featured on the London Boulevard soundtrack, is present on the record under the name "La Fee Verte", but the album version is different from the soundtrack version. In June 2011, Kasabian closed the Isle of Wight Festival. They also headlined Rockness festival and played at Rock Werchter in July 2011. The band confirmed that the album would be released on 19 September 2011. "Switchblade Smiles", the first song to be heard from Velociraptor!, was exclusively played on UK radio on 7 June 2011 during Zane Lowe's show on BBC Radio 1. The title and release date of the fourth album was also confirmed on the show. This first single from the album was available for visitors to listen to on the Kasabian website, and was available as a download for people who pre-order the album. Two tracks from the album ("Velociraptor" and "Switchblade Smiles") were premiered throughout the four-date warm-up tour including playing at the Leeds O2 Academy before the RockNess and Isle of Wight festivals in June 2011. A track from the album "Days Are Forgotten" was due for radio release on 22 July 2011. However, it surfaced online the night before. The album failed to crack the Billboard Top 200 chart upon its first week of release in the United States. On 27 November 2011, Kasabian performed "Goodbye Kiss" during the BBC's Formula 1 2011 closing season montage. In the same month, the band went on a full tour of the UK, including two sold out gigs at the Capital FM Arena in Nottingham, supported at the shows by Miles Kane and Australian band ME. On 31 December 2011, Kasabian played a New Year's Eve concert entitled 'NYE:Rewired' at the O2 Arena, London. The event was streamed live on YouTube. Following early 2012 dates in Japan, Australia, and Europe, Kasabian launched their North American leg in Dallas on 12 March, with 19 dates in U.S. and Canada until late April. It was announced on 16 May on the Kasabian website that their show of 15 December 2011, that was filmed at the O2 in London, would be screened in over 60 cinemas in the UK and Ireland on 30 May 2012. The film, titled Kasabian Live! Live at the O2 is distributed by Altive Media and Eagle Vision. On 29 June 2012, Kasabian performed at the Main Square festival in Arras France. At the end of the set, Tom Meighan returned to the stage without the band and performed The Beatles "She Loves You" unaccompanied, something that he had also done three days earlier in Athens, Greece, and on 16 June in Denmark at the NorthSide Festival. On 8 July 2012, the band headlined the UK festival T in the Park. Kasabian also headlined the Reading and Leeds Festivals on 24 and 25 August 2012. CANNOTANSWER
Question: Did anything unusually significant happen during any of their performances?. Whats the answer?

At the end of the set, Tom Meighan returned to the stage without the band and performed The Beatles "She Loves You" unaccompanied,