vicarious prayer, n.All

Vicarious prayer (n.) hands ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠the praying over to the rabbi, the cantor, finally the organ, which ends up leading the congregation.