There are several bands under the name Sleep Patterns. 1. Sleep Patterns was a Screamo/Post-Hardcore band from northwest Indiana/Southern Michigan. Their bass player and lead singer began having nervous breakdowns and the band broke up shortly after. http://www.myspace.com/sleeppatternsin 2. Sleep Patterns is an unsigned Jazz/Fusion band with members from Flint and Chicago. http://www.myspace.com/wearesleeppatterns 3. Sleep Patterns is a South Florida hardcore band