What better way to find out about local music than by attending a free concert? We’ve lined up five of Charlotte’s best for this showcase — they’re all featured on Vol. 6 of Jeff Hahne’s Homebrew compilation album. The dream-pop of Alt-Ctrl-Sleep, the funk-pop of Colby Dobbs Band, Forever F.C.’s collaborative hip-hop, the garage punk of Scowl Brow and the Americana of Amigo. Stop by and check it out — it won’t cost a thing.