Mortimer’s residencies are a cornerstone of the MPLS + STPL rock scene, and every week in February The Sex Rays return to the stage with their crunchy twangy throwback sound with some good ol’ fashioned rock ‘n’ roll from some of the loudest and most fun bands around the Twin Towns that you’ve likely never heard of. This week includes sets from The Stonedest and The Desire Store. Even more fun: The intrepid DJ MeganO spins records in-between sets. WEDS, 8 PM. $7.