Video: Chetham choirmaster 'systematically' abused underage pupil who later committed suicide The former choirmaster at the prestigious Chetham's School of Music in Manchester subjected an underage pupil to "systematic" sexual abuse, the Chief Crown Prosecutor Nazir Afzal said today. She trusted him and looked up to him and yet he abused her. That was the ultimate betrayal by a teacher of his pupil," he said. Michael Brewer, 68, was handed a six year prison sentence after being convicted last month of indecently assaulting Frances Andrade, 48, when she was an underage student at the school. The mother-of-four from Guildford, Surrey, gave evidence against him in his trial at Manchester Crown Court but a week later she took her own life before the jury reached its verdicts. Mr Brewer's ex-wife, Kay, 68, was jailed for 21 months after she was convicted at the same trial of indecently assaulting Mrs Andrade when she was 18.