Tulsa, Oklahoma – On this edition of our show, we speak with Susan Hellauer, a member of the internationally celebrated and long-running all-female vocal group known as Anonymous 4. This ensemble will offer its very first concert in Oklahoma on Thursday the 11th at 7:30pm in the Walter Arts Center on the Holland Hall campus (on East 81st Street in Tulsa). For more information on this fine group, which is being presented locally by the non-profit Choregus Productions, you can visit both of these sites: [anonymous4.com] and [choregus.org]. As we learn on today's StudioTulsa, the four women comprising Anonymous 4 combine musical, literary, and historical scholarship with top-notch contemporary performance skills to create remarkable programs of medieval, contemporary, and American music. The group, which began back in the 1980s, has by now performed all over the globe --- and sold more than a million recordings.