However, you could use some more general collective nouns depending on the context:
* A series of concerts: This is a simple and straightforward option.
* A festival of concerts: This works if the concerts are part of a larger event.
* A cycle of concerts: This implies a planned set of concerts, often with a theme or focus.
* An array of concerts: This suggests a diverse or impressive collection of concerts.
* A roster of concerts: This is a formal option, perhaps used to list upcoming events.
You can also use creative metaphors like "a symphony of sound" or "a chorus of voices" to describe the overall experience of a group of concerts.
Ultimately, the best collective noun depends on the specific situation and the effect you want to achieve.