THOR'S HAMMER : IF YOU KNEW This is just nuts. Starts out like a Beatles rip-off, then . . . well, then it continues to be a Beatles rip-off. But stay with it. Not only is this a rare example of 60s Icelandic rock, it's the sort of a song a band hones in live gigs and records at the peak of their abilities. They had other songs, but nothing quite like this.