San Francisco-based early music ensemble Cantata Collective continues its major series of J. S. Bach’s choral works with the Mass in B Minor, a towering testament of sacred music and the composer’s crowning achievement of his final years. With celebrated conductor Nicholas McGegan, four of today’s most distinguished early music vocal soloists and a refined chamber choir, this live recording exudes a spontaneity that reveals the depth and passion of Bach’s glorious affirmation of faith.