This is what I know about Saturday nights show...
Fishbones
400 Monroe St.
Detroit, MI
Int'l Center Building
313-965-4600
two sets starting at 10:00PM
The fishbone's website is
here.
You do not need tickets or anything. Usually to see them, you just have to pay cover to get in the bar. I can't find whether or not fishbone's has a cover. If so, it's probably just a few bucks.
:o)