Indeed; speaking of wassailing, this page (<a href="http://www.hymnsandcarolsofchristmas.com/Hymns_an..." target="_blank">http://www.hymnsandcarolsofchristmas.com/Hymns_an... has a nice history of wassailing. Edited comment: I tracked down the Geocities wassail site they linked to at the end of that page, which is now at http://mysite.verizon.net/cbladey/wassail.html.

Choral music presents kind of a problem because the tradition evolved so much from Christian religious music that, like FernWise said above, a lot of the good stuff is Christian in nature. It is possible to sing good, secular winter-themed classical choral music, but there's not a lot of variety in it. For non-holiday concerts you can break out the Romantic part-songs (many of which are nature-oriented and very pagan-friendly), madrigals, opera choruses, world music, and the occasional tasteful secular modern piece (difficult to find, unfortunately) but for winter holidays (often coinciding with an end-of-term concert)? You either have to not do any holiday music at all, which unfortunately leaves out a vast part of the choral tradition, sing secular winter songs, which doesn't have much variety (or, imho, taste....I hatehatehated singing Winter Wonderland for the umpteenth time), or try to have a mix of different winter holidays along with some secular pieces. The latter was what my college chorus did (at just about the definition of the most secular school in the world), and I think it worked ok. Christmas music usually made up the majority of the program because that's the majority of choral holiday music, but we'd also sing Hanukkah and secular music. I think for the latter, if you're a mature singer, you have to realize that you're not always going to agree with the content of the music you're performing--sitting out for one song just gives all the Christian members an excuse to sit out for the Hanukkah and secular songs, after all, and I think that's equally disagreeable.

It would be great if there were a resource of pagan-friendly choral music suggestions out there that high school students who were so inclined could suggest to their director for a more diverse musical lineup. One of my favorites was Elgar's "The Snow", which has a theme of death and rebirth under the winter's snow. Another one I like is "Sure on this Shining Night", which has great settings by Samuel Barber and Morten Lauridsen, and I think of the beautiful text as a sort of pantheistic carol. Wassailing songs also have their root in Pagan traditions and are good fun.

re: The Hazards of Love, they played the animation (or most of it? Perhaps another version) when they ran through the album when I saw them play at the Treasure Island Music Festival. The imagery was cool, especially some of the mushroom videos. If you're a fan, I recommend it.