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Imagine the power of 1000 voices. Live. Now imagine witnessing that natural force from within the prestigious Royal Festival Hall. Sounds pretty epic right!?

On Sunday 5th April, 1000 voices – including the ACM Gospel Choir, Singology Choir and Southbank’s Voicelab Choir – accompanied by a full live band, will perform popular songs arranged by Mark De-Lisser specifically for choirs, featuring guest performances from stars of BBC’s The Voice in London’s Southbank Centre.

ACM have had a long standing relationship with the ACM Gospel Choir. Formed in 2005 by vocal coach Mark De-Lisser, the choir rose to fame when they reached the semi-finals of BBC One’s Last Choir Standing series in 2008. Dubbed the “Stars” of the show they have since toured with Russell Watson, performed with Beverley Knight, recorded with Robbie Williams, Olly Murs and featured as special guests for HRH The Queen on numerous occasions.

Adding to the list of accolades, the group recently received a Guinness World Record after performing the World’s highest ever gig at 32,800ft, on an easyjet flight to Geneva.

To be a part of the 1000 strong choir, Sing Out Sunday are offering places to choirs and solo singers on a first come first serve basis. Head over to the Sing Out Sunday website to sign up and see what other workshops // performances are available.

Also, make sure you keep up to date with Sing Out Sunday on Facebook and Twitter.