DS is in Y13 - he has just done his performance pieces for his music A level. These were recorded in the school hall. On the first the backing track was so loud you could hardly hear him and the third was interrupted by the school bell. He's furious and is emailing his music teacher to ask if he can retake them ... ls this something they can do, or is it one shot only? It does seem unfair as he'd set the levels on the backing track where he wanted them and then one of the helpers whacked them up to 11 and drowned him out, and the bell ruins the ending of the last piece.