Acapella is a performance by a solo singer or a group of singers without any instrumental accompaniment. Made famous in the film franchise “Pitch Perfect” that features stars such as Rebel Wilson and Anna Kendrick, acapella is one of the most upcoming music genres and now you can see it live. The OAC (Open Acapella Competition) is coming to the Warwick Arts Centre for the 2nd time and you can watch 10 of the most acclaimed acapella groups from across the UK as they battle it out for acapella supremacy.