Yes, it's true! The Danish Bank (Danske Bank) has it's own music, and it's quite good at that!
https://www.danskebank.dk/Link/danske247kampagne
It'd had other music which was terrible, but it runs some ad campaigns with two very different kinds of musicians - a classical harp and a "modern" type, like a vocal "synthesizer"/drummachine.
See and hear for yourself. You can download the mp3's which I just did, but don't listen without first watching the videos.