In chapter five the <i>Angel Chorus</i> swings in.[17] They are grouped round about the quartette, and the twenty-four elders. John begins to count them. Then his figures give out. His knowledge of mathematics is too limited. There were ten thousand times ten thousand, and unnumbered thousands of thousands. As far as his eye could reach, to left and right, before and behind, was one vast sea of angel faces. And John listened enraptured and awed, as their wondrous volume of rhythm rang and thundered out. Sweet sopranos and mellow contraltos; ringing tenors and deep basses; first one, then the other, back and forth responding to each other, then all together; marvellous music it must have been. Then the refrain of their song is caught up by the <i>Creation Chorus</i>.[1] Every living creature in heaven and on the earth and under the earth, as though unable to resist the contagious sweep, catch up the music and add their own to it. We don't commonly associate music with the animal creation, nor with nature. It has been said that all the sounds of nature are keyed in the minor, as though some suffering had affected them. We talk of the sighing of the wind, the moaning of the sea-waves, and the mourning of the doves. Though the singing-birds must be excepted. They seem to have caught and kept some of the upper strains. But evidently something has occurred to strike a new key-note. For now they take up the refrain of the joyous song of the others, and increase the mighty song by their own. In chapter seven the music has ceased or softened down and is taken up afresh by the <i>Martyr Chorus</i>.[18] Again John's figures give out. He declares that nobody could count the multitudes that make up this chorus. It is a polyglot chorus. They sing in many different languages, but all blend into full rhythm. It's a scarred chorus, too. These have been through great tribulation. Their scars tell the mute story of the fierceness of the fight, and the steadiness of their faith. Through their singing runs a distinct strain of the minor. Its strangely sweet cadence, learned in many an hour of pain, runs as an under-chording through the song of triumph that now fills their hearts and mouths. And as they sing, the angel chorus and the quartette drop to their knees, and swell the wondrous refrain. In chapter fourteen comes the music of the <i>Chorus of Pure Ones</i>.[19] They are gathered close about the person of Jesus. They sing to the accompaniment of a great company of harpers. They sing with a peculiar clearness in their tones. Theirs is a new song. Purity always makes a music of its own, unapproachable for sweetness and clearness.