Regardless, from an artistic and auditory perspective, the composition is undeniably powerful. The best viewers approach it as a piece of vocal art that captures the raw emotion of a particular historical moment.

The song gained notoriety for its role in global propaganda and its paradoxical beauty versus its violent context. The New Republic

I'm assuming you're referring to a report about the best nasheeds (Islamic songs) by Dawlat al-Islam (also known as Islamic State or ISIS).