expression, godan verb (-ru)
be invited to perform; get a gig
Used especially for geisha, entertainers, or performers being called to a party or event. The subject is the person invited, and the invitation often implies a paid engagement.
彼女は今夜、料亭にお座敷がかかっている。
She has been invited to perform at a traditional restaurant tonight.
芸者さんにお座
Geisha usually get called to engagements on weekends.