an audition, esp. for actors or dancers, open to anyone wishing to try out
Examples of 'open call' in a sentence
open call
And most regularly hold an 'open call' when they check out hopefuls.
The Sun (2006)
The recruitment process begins with an open-call audition.
Globe and Mail (2003)
Alongside issues devoted to particular subjects, an open call for submissions helps the journal to maintain a diverse range of contributors and topics.