Bach Collegium Japan and Masaaki Suzuki’s fifth volume in their commendable survey of Bach’s vocal music with a collection of his festive secular Birthday cantatas, composed to honor a broad array of personages and including pieces presented as musical dramas where the soloists embody characters from Greek mythology, here sung by Joanne Lunn, soprano; Robin Blaze, counter-tenor; Makoto Sakurada, tenor; Dominik Wörner, bass.