There was a time when an Arab singer sang Surat Al Fatiha from the Quran accompanied with Piano, this angered everyone and some clerics even ordered him dead. So yeah, these kind of things happen.
Next time, the band perhaps can sing an old Islamic or Sufi poem instead of Quran(assuming they still want to), I'm sure this will cause less disturbance to our muslim brothers and sisters.
I apologize on behalf of my other muslim brothers and sisters who couldn't express their opinions in a more respectful way, and I also apologize for losing control and replying in the same hateful manner, I hope the band takes nothing perosnally, we still love you all, and the only reason why our fans overreacted was because they loved the band they were shocked and dissapointed when they felt the band was offending Islam.