The Auditori de Barcelona has announced its 2021-22 season featuring a variety of music and soloists from around the world. Here is a look at the vocal highlights. Juliet Fraser joins the ‎Plus-Minus Ensemble for music by Cassandra Miller. Performance Date: Sept. 30, 2021 Maria Hinojosa and Anna Alàs join Francisco Poyato, Anna Crexells, and the SEED Ensemble for songs {…}