Have you tried looking in the DT database? You can browse around by category until you find something interesting, then get the tune from the little clicky tune thing at the bottom of the page, assuming you have a soundcard (my PC at home isn't working & the one at work has no soundcard - so in desperation I sometimes just make up a tune to fit & hope no-one asks any awkward questions - but then I s'pose no one will sing along, which rather looses the point...). What is your general taste in songs? There are loads of singalong chorusy songs in various categories - but you need something well-known enough for people to join in, but not done-to-death already. Hmmmmm.

Kris.