Eurovision songs - Groot Draaiorgel Mortier

This is probably the most mysterious single I've ever bought. It didn't come with a sleeve, so all I have is the disc and the info on the label. It is credited to Groot Draaiorgel Mortier, and since the single is made in Belgium I have to assume it's a Belgian barrel organ.

The songs played by this barrel organ all come from the 1960 edition of the Eurovision Song Contest: 'Niet voor mij', 'Wat een geluk', 'Looking high' and 'Tom Pillibi'. There is no information about Groot Draaiorgel Mortier on the web, so this single looks likely to remain a mystery.

Listen to one side
Listen to the other side

My collection: 7" single no. 5819
Found: Kringloop Den Haag, January 16, 2016
Cost: 0,25 euro
Tracks: 'Niet voor mij', 'Wat een geluk' / 'Looking high', 'Tom Pillibi'