try‧out /ˈtraɪaʊt/ noun [countable] American English

1. a time when people who want to be in a sports team, activity etc are tested, so that the best can be chosen:
baseball tryouts

2. a period of time during which a play, television show etc is shown to find out if people like it

[TahlilGaran] Dictionary of Contemporary English ▲

tryout
n. An audience at a theater or opera for would-be actors and singers.
The Civic Opera is holding tryouts throughout all of next week. Maybe I'll go and see if I can sing in the chorus.

[TahlilGaran] English Idioms Dictionary ▲