noun
formal opening of a new theater
Refers to the inaugural performance or ceremony marking the opening of a newly built theater.
新しい劇場の舞台開きには、多くの著名人が招待された。
Many celebrities were invited to the formal opening of the new theater.
Compound of 舞台 (butai, 'stage') and 開き (biraki, 'opening'), literally 'stage opening'.