In 2021, the band announced that they would release a new orchestral album, String Theory. Scheduled for release on 20 August 2021, the album features orchestral versions of some of the band's hits, such as "Messages", "Remember David" and "Say You Love Me". The album's first single, "Say You Love Me", was released on 23 July 2021. The single was released in seven different versions and featured a music video released on YouTube.
In 2021 the band announced that they would release a new orchestral album String Theory Scheduled for release on 20 August 2021 the album features orchestral versions of some of the band's hits such as "Messages" "Remember David" and "Say You Love Me" The album's first single "Say You Love Me" was released on 23 July 2021 The single was released in seven different versions and featured a music video released on YouTube