Dance Gavin Dance performs at The Regency Ballroom in San Francisco on March 31, 2019. Photos: Joaquin Cabello. SAN FRANCISCO — Dance Gavin Dance explored the breadth of its influence at the beginning of the band’s North American tour at The Regency Ballroom. Dance Gavin Dance performs at The Regency…

Periphery, “Periphery IV: Hail Stan.” Since Washington, D.C.’s Periphery helped spearhead a Meshuggah-worshiping tech-metal offshoot, what’s kept the band relevant hasn’t been  the polyrhythms, but the songwriting. The band’s hyper-syncopated breakdowns have proven an unlikely partner for sticky vocal melodies and adventurous playing. Now on its very own label,…