Slovenian accordion

Here's a fast-fingered Slovenian button-box player I think you'll enjoy.



He's playing what is sometimes called a "helicon box" because it has long bass reeds that mimic the sound of the tuba named after Carl Fischer Helicon. This accordion appears to have three rows (each row is tuned to a particular key), with a helper row of accidentals on top. I've not come across one quite like this before.