If ya listen closely to the campaign video, you'll hear some new tunes. Think of this campaign as a way to pre-order Calculator's new album. WHAT? A NEW ALBUM?!!! Yes indeed. Spread the word. Donate. Get into it. Fo'sho.
I'm pretty sure this track was released earlier this year on their Bandcamp, HERE. But it's also on Youtube :-D This is Eskera. The song is called, Nuevo Rostro de la Esclavitud.