School choirs and orchestras are not going to be the same. I suppose at least there can be small groups but less people will get to be in them I guess. Here is the quote:
"Schools should note that there may be an additional risk of infection in environments where you or others are singing, chanting, playing wind or brass instruments or shouting. This applies even if individuals are at a distance. Schools should consider how to reduce the risk, particularly when pupils are playing instruments or singing in small groups such as in music lessons by, for example, physical distancing and playing outside wherever possible, limiting group sizes to no more than 15, positioning pupils back-to-back or side-to-side, avoiding sharing of instruments, and ensuring good ventilation. Singing, wind and brass playing should not take place in larger groups such as school choirs and ensembles, or school assemblies. Further more detailed DfE guidance will be published shortly."