The season of performances had already finished at Opera Holland Park, but the directors wanted to put on one final show last night. And it was probably the biggest and most important of the lot.
The whole team had wanted to recognise the fire that claimed the lives of so many in Grenfell Tower, which is in the same borough as the Opera, and raise money for the victims and the Portobello Rugby Trust.
It was a cause that was particularly important for the team, because one of their members of staff remains missing following the tragedy.
A chorus, orchestra and lead singers were quickly assembled to perform Verdi's Requiem, and London Live went to film the final rehearsal for the concert.