Mr. Imperium (UK title: You Belong to My Heart) is a 1951 romantic musical drama film produced by Metro-Goldwyn-Mayer and starring Lana Turner and singer Ezio Pinza.

When his father becomes gravely ill, Mr. Imperium must rush to be with him but asks prime minister Bernand to deliver a note of explanation to Fredda.

Fredda drives to Palm Springs to consider the proposal and decide which actor should costar in her next film, which will tell the story about a girl who falls in love with a king.

Mr. Imperium was the first of two musicals that MGM attempted with South Pacific stage star and former Metropolitan Opera singer Ezio Pinza.

[citation needed] The film was exhibited mostly as a second feature despite its lavish MGM production in Technicolor and with Lana Turner in a starring role.