Guiding Principles of Diversity, Inclusion and Belonging: Vocal Matrix Chorus is a chapter of SingUnited International — formerly Sweet Adelines International — a nonprofit organization of approximately 17,000 members in choruses and quartets worldwide. Vocal Matrix adheres to this global organization’s Guiding Principles of diversity, inclusion and its culture of Belonging: “We create harmony where every voice matters. We foster a culture that provides a joyful place to share our uniqueness within a global community united in song.”