The Percussive Arts Society plans to open an interactive museum at Washington and Illinois streets downtown.

The museum, called “Rhythm! Discovery Center,” will have its grand opening on Saturday, Nov. 21. The museum also will have a "soft" opening on Nov. 12, in time for the society’s annual convention, which is expected to draw 5,500 to 6,000 people to Indianapolis.

Another music-driven organization, Bands of America, is hosting its Grand National Championship in Indianapolis the same week.

The Percussive Arts Society has been planning the new museum since moving its headquarters from Oklahoma to Indianapolis in 2007. The 15,000-square-foot museum is on the lower level of the Claypool Court building, 110 W. Washington St., Suite A.

The center will house three rotating exhibits, an open-play area and two soundproof practice rooms with new acoustic-control technology. The bulk of the society’s 800-piece collection will be in storage, but the items will be visible through a large window.

The society will spend less than $1 million to launch the museum, marketing director Jon Feustal said.

"We hope that it allows us to build the organization, build the discovery center, add programming and further our mission," he said.

Admission is $8 for adults, $7 for senior citizens and $5 for students and children 6 and older.