musical chairs

noun
1
a children’s game in which players run round a row of chairs while music is playing. Each time the music stops, players try to sit down on one of the chairs, but there are always more players than chairs.
بازی صندلی موسیقی, صندلی‌بازی
2
a situation in which people frequently exchange jobs or positions
تعویض مکرر جایگاه‌ها, تغییر مکرر مشاغل, چرخش پست‌ها, جابجایی مداوم موقعیت‌ها