With their latest album, reeed quintet Calefax explores the majestic and mysterious essence of the organ— without an organ in sight. Revoicing centuries of repertoire for their wind ensemble, they channel the instrument’s spiritual depth, improvisational roots, and theatrical flair through breath and reed instead of pipes. From Jan Pieterszoon Sweelinck’s Fantasia Chromatica and Nicolaus Bruhns’s richly imaginative Prelude in …