Frosty The Snowman Organ Cover Uploaded by: JonnyMusic Composer: Steve Nelson, Jack Rollins Organ: Casavant, opus 3742 (1995), Bellevue, Washington Software: Hauptwerk VIII Views: 36
La Marseillaise Uploaded by: cummingsliam38 Composer: * My Own Composition Organ: Casavant, opus 3742 (1995), Bellevue, Washington Software: Hauptwerk V Views: 57
Here's Daisy Bell by Harry Dacre, known for being the earliest song sung using computer speech synthesis in 1961 and its reference in the 1968 Sci-Fi film "2001: A Space Odyssey", on the Organ.
Sheet Music can be found in the description of the YouTube version.