Confused there was no Grateful Dead tribute show last weekend? Fear not, as tonight you can hear the Grateful Bluegrass Boys who are at Humboldt Brews at 9 p.m. As the name implies, they give the Dead tunes the bluegrass treatment and feature members of Hot Buttered Rum and the David Thom Band. It's $10 for this Deadgrass show. Heavy rock and metal can be found at The Alibi in Arcata at 11 p.m., as local stoner metal band Ultramafic headline and welcome Denver rockers Cloudcatcher for a raucous show. Only $5.