But that certainly wasn't Geddy Lee singing - and the music was all wrong. See for yourself http://www.youtube.com/watch?v=op4O0zpEzGI
So, who was it? Googling this was harder than I thought, so I thought I'd share the information, as well as the site I got it from:
"Tom Sawyer" Vocals Mark Edwards
"Tom Sawyer" Guitar Lance Taber
"Tom Sawyer" Bass Ric Fierabracci
"Tom Sawyer" Programming Scott Dugdale
"Tom Sawyer" Keyboards Scott Dugdale
"Tom Sawyer" Drums Joel Taylor
http://www.allgame.com/cg/agg.dll?p=agg&sql=1:64654~T3
I have no idea who Mark Edwards was, though he may have sang for a group that I've never heard of called The Runners.