Vocal Matrix Chorus is a proud chapter of SingUnited International, a 501(c)(3) nonprofit organization doing business as Sweet Adelines International (DBA SingUnited International, 9110 S. Toledo Ave., Tulsa, Oklahoma 74147, (918) 622-1444). For more than 20 years, Vocal Matrix Chorus has brought people together through the joy of music, sharing the rich harmonies and vibrant spirit of four-part a cappella barbershop. Your generous support helps make that music possible by funding rehearsal space, educational opportunities, chorus coaching, performances, and competition experiences. Every gift, large or small, helps Vocal Matrix Chorus continue to grow, perform, and share meaningful musical experiences with our community. Thank you for considering a donation and for helping us keep harmony ringing for years to come.