There are at least 4 artists with this name. 1) is an electronic brony musician and singer. https://twitter.com/koapony 2) is a Spanish electro producer. 3) is a Hawaiian pop-rock band led by Koa Siu. 4) is a Czech folk band. The band for first formed around Zuzana Navarová d.T. and after her tragic death continued to perform with new repertior. Read more on Last.fm