(LIBIDINOUS RAWK) Sadly, this is the second time Diamond Nights have rolled through town on a Sunday, a notoriously difficult night to draw a crowd in this sleepy city. It's time for Seattle's genuine rock fans to wake up and give these guys the packed house they deserve. I don't care if it's a school night; if you have any appreciation for Thin Lizzy, early Cars, or just plain ol' libidinous showmanship, you have a moral obligation to attend. (Crocodile, 2200 Second Ave, 441-5611. 7 pm, $10, 21+)