Cathie Zimmerman, former Crosstown Harmony Chorus member, obtained the level of Master Director while directing the Riverport Chapter in 2004.  She has been a Sweet Adeline for 25 years, and has achieved a Top-10 International Quartet position (Contagious Quartet), as well as numerous regional quartet championships in both Region 3 and 22.  Cathie has served as Regional Faculty in Region 22, and currently coaches both quartets and choruses, as well as college a capella groups.