at London's O2 arena, in December 2016. In February 2017, Biffy Clyro performed at the Shepherd's Bush Empire as part of Brit's Week to raise money for charity War Child. To celebrate such an intimate performance at this point in their career, the band performed as their own support act with Simon Neil announcing "we are Biffy Clyro, circa 2003 to 2005", and they played an hour long set of material from their first three albums. On 27 May 2017, Biffy Clyro performed to 25,000 people at the Radio 1's Big Weekend Hull 2017. The band also performed at Glastonbury on Sunday 25 June 2017. Autumn of 2018 saw the release of the MTV Unplugged: Live at Roundhouse, London show on DVD and album. A European tour of the show soon followed plus a few other pieces that translated well acoustically. 2018–2019: Balance, Not Symmetry In April 2018, Biffy Clyro announced that they were concurrently working on two albums, their eighth studio album with the working title Opus 8 (released in 2020 as A Celebration of Endings) as well as a soundtrack album. For the soundtrack album, they were working with Welsh director Jamie Adams producing a movie to go along with new, original music. The film, called Balance, Not Symmetry debuted at the Edinburgh Film Festival on 23 June 2019. The 17-song soundtrack album, also named Balance, Not Symmetry was released digitally on 17 May 2019 with a vinyl pre-order made available for release on 26 July. The film stars Laura Harrier, Bria Vinaite, Tasmin Egerton, Freya Mavor, Kate Dickie, Scott Miller, and Lily Newmark. 2020–present: A Celebration of Endings and The Myth of the Happily Ever After On 20 February 2020, Biffy Clyro released the single "Instant History". The track was taken from their eighth studio album A Celebration of Endings. The second single "End Of" was released on 5 March alongside the announcement of the album's title and the release date of 15 May, although this date had to be postponed to 14 August, due to the coronavirus pandemic. The third single from the album "Tiny Indoor Fireworks" was released on 14 May. A Celebration Of Endings entered at No.1 on the UK Albums Chart, making it the band's third consecutive No.1 album. The band had initially announced a UK, Europe and Australia arena tour, beginning in September 2020, although this was postponed due to the coronavirus