Check out the calendar at Bygdelagssamskipnaden. This place hosts some excellent exhibits, live music performances and other events.
This community arts facility in Oslo City Centre comes recommended by travelers, so be sure to put it on your schedule. Don't think the sightseeing ends there, however. There are a lot more options ready for you to enjoy after Bygdelagssamskipnaden. Oslo Opera House, Karl Johan Gate, and Viking Ship Museum are nearby.