Ok, this is an old one:

Hi all ye lads and lasses!
Lift high your Tech filled glasses!
Drink sparkling golden Tech!
Tech the bonny beer!

The tune was "Scotland the Brave", or at least part of it. Carnegie Mellon University was once called Carnegie Institute of Technology, Tech for short. Tech had a damn fine pipe band. (As does CMU.) ergo the Scottish theme. The song was sung by a well formed blond cartoon lady, in kilt and tam o shanter. As far as I know the beer is no longer made, but if your ever on Carson Street you could ask at Piper's Pub.