"Invitation" is a jazz standard composed by Bronislaw Kaper with lyrics by Paul Francis Webster, originally written as the theme for the 1952 MGM film of the same name directed by Gottfried Reinhardt. Kaper, a Polish-born composer who fled Nazi Germany for Hollywood, had first used the melody in the 1950 film A Life of Her Own before it gained wider recognition through the later picture. The composition is set in a 48-bar ABA' form, where the final A section varies from the opening, creating a sense of evolution across the tune's arc. The melody is lyrical and romantic, characterized by flowing, stepwise motion that builds emotional tension through subtle rises and falls, supported by a sophisticated harmonic progression with modal inflections. These rich, extended harmonies give the piece a melancholic, searching quality that has made it especially attractive to jazz improvisers. The tune's rhythmic flexibility allows it to work convincingly as both a slow ballad and a medium-tempo swinger. "Invitation" has been recorded by an impressive range of artists including Miles Davis, John Coltrane, Joe Henderson, Eric Dolphy, and Sarah Vaughan, cementing its place in the standard repertoire. It stands alongside Kaper's other enduring contribution to jazz, "On Green Dolphin Street," as evidence of Hollywood's significant role in supplying the jazz world with lasting melodic material.