If you're the type who enjoys being among the first to hear what's new, you'll want to get down to Drom tonight. There, composer-fiddler Matt McBane's winsomely rootsy quintet Build will be showing off its latest sounds. Sharing the bill is Empyrean Atlas, headed by Philip Glass Ensemble saxophonist David Crowell; his writing for this new outfit combines Minimalist drive and Afropop shimmer—a bright, infectious mix.