The Prince of Rock 'n' Roll (S03E07)

Desiring the affection of his people, Prince Vince sets out to become a rock and roll sensation. Unfortunately, his tunes are so gloomy that they end up alienating everyone. To avoid hurting his feelings, Lydia lies and praises his music instead. This leads to an endless tour, plunging the entire Neitherworld into despair. Realizing the impact of her deception, Lydia realizes it might finally be time to reveal the truth to Vince.