Cornerstone Choral Series Key-Ring Music is proud to offer another quality sacred choral series. The Cornerstone Choral Series is aimed at your younger choirs, or your chamber choir. Some very fine composers and arrangers, Jack Rinke among them, have lent their talented pens to this fine series. Order your evaluation copy today of any or all of the selections available and discover for yourself what a difference the Cornerstone Choral Series will make in your choir. Plymouth Choral Series Coming Soon!