This got played on "The Golden Hour" yesterday and the Wikipedia article mentioned boomboxes (although the pop ups at the end obstruct the video). This was actually Miami Sound Machines breakthrough hit in zEurope despite being a bit of a flop in the USA.
It looks like the harmonica is a boombox but it's hard to tell. First time I've heard that, it wasn't too bad, I don't know why it didn't get played over here.