Misc: Who was the Norse god of peace & prosperity?

Questions

The Canadian dairy producers parodied this song with "M M M Moo Cows..."?

The Clash: Ch_rl__ d_nt s_rf?

The common name for a low frequency speaker?

The concert which Morrison allegedly "revealed" himself was in what city?

the concerti on the two voyager probes information discs are performed by what famed canadian pianist?