The performance was organised by music lover Penny Anson, whose son Joe had been a pupil at the school, and had been supported by CLIC Sargent.
Penny, along with an intrepid band of CLIC Sargent Singers, have been holding and staging music performances on behalf of CLIC Sargent at Manchester Grammar School for 18 years, and have now raised over £50,000 for the charity.
Penny said: “We began our concerts when my son Joe was diagnosed with Hodgkin Lymphoma aged 15 in 1996.
"After successful treatment he became ill with secondary leukaemia and sadly died in 1999, just after his 18th birthday.
"Our family, Joe in particular, received tremendous support from CLIC Sargent both at the Young Oncology Unit in The Christie treatment centre in Manchester, and at home.
"It is impossible to describe the huge part the CLIC Sargent Social Workers played in our mental and physical survival."
CLIC Sargent Fundraising Engagement Manager Joe Burns said: “It’s been an absolute delight seeing and hearing all the musicians taking part in this event, from the first rehearsal to the performance itself.
"The quality of the music really was breathtaking, and what’s equally as impressive, if not more so, is the dedication and support we’ve received from Penny over the last 18 years.
"Penny has been able to raise over £50,000 through these performances, and these donations will help provide vital support for children and young people with cancer, and their families.”