Sideways Orange makes robust garage rock. Unencumbered by trivialities, there’s a frank briskness to its elemental offerings. Fellow capital city three-piece Josie McQueen is a little more provisional in its pop-based releases, but shares an aversion for the needlessly complex. The group’s songs rise and fall under the premise that less is more. The Wimps channel a folksy minimalism, invoking the confessional late-night AM radio sound passed down through the decades by the Modern Lovers and the Velvet Underground. The three groups play the local music showcase presented by Radio Rubber Room, the Richmond comedy and live-music podcast from hosts Derrick Vara, Chanelle Vigue and Shaun Austin, on Wednesday, Dec. 30, at the Camel. Doors open for the all-ages show at 9 p.m. Free. thecamel.org.