I too enjoyed the puzzle, Grunger, but that was in spite of the theme! I've never been a fan of 'it' (or the rest of the twosome's output), but it was all quite cleverly done.
Add me to the thanks for an excellent puzzle. I'm with Malone on my musical taste for this genre. I'm not exactly highbrow, but don't mind a bit of Carmen, Aida etc. Forget Wagner for bobbycollins!