Indubious is a Bend, Oregon-based reggae band whose sound is full of the kind of echo-y, sonic noise that saves the genre from boring repetition. The group is centered around the Burton brothers, Evton and Skip, who were both born with the potentially fatal condition of cystic fibrosis but build a fine musical career. They’ll be landing at Humbrews tonight at 8 p.m. and $20 will give you a chance to see a bit of their magic.