Plenty of DJs bridge the gap between hip-hop and electronic music, and A-Trak is one of the more notable figures doing so — but he’s even more relevant because of his work behind the scenes. Early on the Canadian musician established himself as a champion scratcher in international competitions like DMC, and he later went on to provide scratches for tracks by artists like Kanye West and Calvin Harris. As a producer, he’s worked with underground artists and mainstream stars — recent collaborators include Young Thug and Quavo — and scored a Grammy nomination for the song “Barbra Streisand” as one-half of Duck Sauce. Away from the turntables, A-Trak also founded Fool’s Gold in 2007, an indie label that has since released Kid Cudi’s breakout single “Day ’N’ Nite,” Danny Brown’s acclaimed mixtapes The Hybrid and XXX, and Run the Jewels’ self-titled debut, among many others. 9 p.m. at Nashville Underground, 105 Broadway ALEJANDRO RAMIREZ

