Los Angeles-based indie rock duo Girlpool is breaking up ahead of its final tour this fall, which will begin Sept. 8 in Portland, Ore., after a number of previously announced dates have been canceled. “After nine years, we have decided to take a break from Girlpool and go our separate ways as songwriters,” group members Avery Tucker and Harmony Tividad said in a statement.”This upcoming tour will be our last one — it will be an ode to the past, a celebration for the future and something we will pour both of our hearts into completely. We are each other’s biggest fans and always encourage each other to stretch and evolve, whether that means it’s alongside one another or not.” The group broke through with its 2015 debut album, Before the World Was Big, of which SPIN said at the time, “Tivida...