Earlier this month, the fine folks of Creative Commons Japan hosted a beatmaking event at Bigakko, an innovative art education center in Tokyo. A quartet of up and coming Japanese electronic music producers—Madegg, Metome, Foodman (best name ever), and Canooooopy—were issued a challenge: Create brand new remixes of CC-licensed tracks found online. The musicians had exactly four hours to complete the challenge, from finding the CC-licensed source material to exporting their finished remixes.

The results turned out to be pretty fantastic, and are now available through the Creative Commons SoundCloud account. Most of the remixes and almost all of the source tracks that were used are licensed under CC BY and CC BY-SA, so there’s a lot here that you can not only listen to but also use for your own projects and remixes. Check ’em out:

Madegg, “Banana Man”

Metome, “Impro 2016l4l2”

食品まつりa.k.a Foodman, “Hey”

Canooooopy, “雲間に閃く集合知 [clouded souls of crowds]”