there's a hilarious line i remember from george starostin's review of follow the blind.
he was talking about valhalla, a live staple and the most famous song on the album.
[valhalla]'s got the most seductively sing-along-ish chorus on the entire album: "VALHALLA! Deliverance, why've you ever forgotten me?", repeat ad infinitum until Thor and Odin are finally forced to expedite a return letter with some legal explanation of why they have ever forgotten you.
and he was right! it's three repetitions each chorus, repeating the choruses until the gods take notice.
it even has kai hansen (from helloween and gamma ray) for some vocals! he does the thin, high-pitched screams.