GCM meaning in Academic & Science ?

The Guild of Church Musicians is a charity to help encourage high standards in church music. It offers members examinations, courses, and awards. The guild is a fellowship of those who sincerely desire to offer the best in music to the service of the church: amateur and professional musicians unified in a common ideal.

The guild was founded in 1888 as the Church Choir Guild. It was incorporated in 1905 to become known as the Incorporated Guild of Church Musicians. The founding patrons were Archbishop Frederick Temple and Sir George Elvey, organist of St George’s Chapel, Windsor.

Although the organization was mainly Anglican since its founding, in 1988 in the centenary year of the Archbishop of Canterbury, the Catholic Archbishop of Westminster was invited to become a joint patron, and the guild's openness to all branches of the Christian Church was affirmed.