If the image you want to include is not on Commons then we have potential issues You say you have the band s permission but of course we have no way of verifying that I don t doubt you but legally Wikipedia needs to be certain I d have to get back to you if that were the case It may be easiest to try including the image and very shortly I d expect it then to be challeneged or removed But at least at that time you would have full standard instructions on how to proceed Hope this helps