"Smooth Opera-tor" is the seventeenth episode of Season 4.
Synopsis[]
The spring gala is back in Boston, and with Jillian out of commission, Jonathan hard at work preparing "A Bun in the Coven" and Leo and Maya over their heads with the winter musical, the London trip and three kids under three, Vera and the arts faculty have made the brilliant decision to focus the entirety of the night's program on the music department, in particular Bonnie's senior vocal students. Unfortunately for the music department, an extremely large number of early decision acceptances to very prestigious music schools has inspired the overjoyed seniors to spend their spring break on a tour of all the amusement parks on the East Coast and the young men and women have screamed their way into frog-noise territory. With only a week to go until the big show and twenty doctors' notes banning the department's most talented seniors from singing for at least two, Bonnie begs for Cora's advice and the young woman makes a decision that could possibly change the trajectory of her career.