North Sea Gas recorded ROSSLYN on their album "Rosslyn." Their web site (see Tatie Bogle's link) has a generous 1-minute sound sample from which I transcribed this chorus:

If you don't believe Da Vinci, come along and I'll convince ye.
I'll tell you all some history that will thrill you tae the bone.
The Celtic Christian pagan rites of masons and the temple rites(?)
Come to Rosslyn Chapel for it's written there in stone.

[There are a couple more verses in that sound sample, but I found them harder to understand.]