It’s been five years since the Bartlett first opened its doors, becoming one of downtown Spokane’s most popular all-ages music spots. As owners Caleb and Karli Ingersoll prepare to unveil their second venue — the Lucky You Lounge — they’re set to celebrate the milestone of their pioneering venture, and two Bartlett regulars are taking the stage next week to commemorate the anniversary. First up is the sisterly trio Joseph, and their haunting but propulsively catchy folk-pop has sold out the room on Wednesday night. The following evening, Seattle singer-songwriter Noah Gundersen will perform, and tickets are still available. If you can’t make either of those dates, electronic act Water Monster and hip-hop artist T.S the Solution will play a free show next Friday.