Hm, Pagan Singers? Never heard of that one, and if you really do get the songs popular they will promote the Pagan and Wiccan religons.
But it does sound far fetched in my opinion.
Faith and the Muse, Inkubus Sukkubus, ect.
There are a lot of pagan or Wiccan singers. Just Google it. Lol.
Wiccan is Pagan (or Neo-Pagan) but Pagan does not really mean Wiccan. :/