General:
* Series (e.g., a series of performances)
* Repertoire (e.g., a repertoire of performances)
* Programme (e.g., a programme of performances)
Specific:
* Concert (for musical performances)
* Show (for theatrical performances)
* Recital (for solo performances)
* Exhibition (for artistic performances)
* Festival (for a collection of performances)
You can also use more descriptive phrases like:
* A roster of performances
* A selection of performances
* A collection of performances
Ultimately, the best collective noun to use will depend on the specific context and the type of performances you are referring to.