What do you call a number of people listening to concert Ora lecture?

Here are some terms for a group of people listening to a concert or lecture:

Concert:

* Audience - This is the most common and general term.

* Concertgoers - This term specifically refers to people attending a concert.

* Spectators - This is a more formal term, often used in situations where people are watching a performance rather than actively participating.

Lecture:

* Audience - This is the most common and general term.

* Listeners - This term emphasizes the act of listening to the lecture.

* Students - This is used if the lecture is part of a formal educational setting.

* Attendees - This term is more neutral and doesn't imply a specific role or purpose.

The best term to use will depend on the specific context and the desired tone.