For the timbrel is made of leather dried and strengthened. Praise Him on the strings and organ. Both psaltery and harp, which have been mentioned above, have strings. And to those, it may be, he added the organ, to signify that they sound not each separately, but sound together in most harmonious diversity, just as they are arranged in a musical instrument. For even then the saints of God will have their differences, accordant, not discordant, that is, agreeing, not disagreeing, just as sweetest harmony arises from sounds differing indeed, but not opposed to one another.
Cymbals touch one another in order to sound, and therefore are by some compared to our lips.