Resource: A. B., Philo-Mus. Synopsis of Vocal Musick Containing the Rudiments of Singing Rightly Any Harmonical Song, Delivered in a Method so Solid, Short and Plain, That This Art May Now Be Learned More Exactly, Speedily and Easily, than Ever Heretofore: Whereunto Are Added Several Psalms and Songs of Three Parts, Composed by English and Italian Authors for the Benefit of Young Beginners / by A.B., Philo-Mus. Early English Books Online. London: Printed for Dorman Newman .., 1680.
The name appears to be simply "A.B." -evidence Google books and common sense
