Apart from many other treasures by Giacomo Meyerbeer, the Choral Treasury series also contains his compositional gem An Mozart. The quartet for four male a cappella voices (TTBB) is based on a text by Ludwig Rellstab. Even in this brief musical bow to Mozart, Meyerbeer's affinity for the opera cannot be denied: He uses a wide harmonic, technical and dynamic range of expression and makes impressive use of the full ambitus of the male choir. A highly rewarding rarity for ambitious men's choirs (or...