From the Number One selling album Angel.  The triple meter and lilting melody in Angel Prelude 1 (Seraphim) combine to create a sense of quiet joy as the Seraphim perpetually pray to the heavenly Father.  Angel Prelude 2 (Cherubim) aims to create a sense of weightlessness and tranquility whilst at the same time having momentum and energy.  Like the Seraphim, the Cherubim are ceaseless in prayer, and the repeated-note figurations are designed to enhance this image.