Why don't more music venues have music stores? This is the first thought I had upon entering Sisters in Christ, the combo record store/gift shop/extended merch table that opened inside Gasa Gasa in November 2014. Most concert tours have a disinterested hanger-on stationed at a folding table in a corner; everyone who passes through the fast-rising Freret Street venue now has that covered by an expanded version of the old Iron Rail record section, open every day from noon until right about sound check. Curators Michael Moises and Bryan Funck (who also fronts metal giant Thou and operates the indispensable listings site noladiy.org) have taken full advantage of the affiliation by booking early shows under the Sisters in Christ moniker, effectively turning Gasa Gasa into the city's best in-store stage. This week they offer female-fronted hardcore (Empty Vessels, Tuesday), an installation of the annual Summer Bummer Fest (featuring locals Donovan Wolfington and Woozy, Thursday) and a grab bag of noise/punk/pop/rock (Broken Water/Sweet John Bloom/R.ariel/Pope/Keeping, Friday), all leading up to Saturday's headliner: Brooklyn's catchy-as-hell, criminally undiscovered Worriers — poised for a breakout and working with Laura Jane Grace of Against Me! on the forthcoming Imaginary Life (Don Giovanni) — and Bristol, England's secret Caves. All tickets $5.