Hiya-
Here's "Ding Dong" links for Periods 5 and 6... :)
http://65.23.157.59/mp3/64621.mp3 (ok, there's some loud lady announcing it, but after that, you'll hear the arrangement that we're playing... )
Here's a vocal version, in case you're interested in learning the tune better...
http://groups.imeem.com/-SUBzIQB/music/V4EKAgAx/vocalessence_ensemble_singers_and_instrumentalists_ding_don/
~Ms. Silberman