The concert features the rarely-performed Spem in Alium, Thomas Tallis' famous motet for 40 individual voices in eight choirs positioned around the audience. Resonance will also feature the world premiere of I Sing of Love by British composer Bernard Hughes, on Islamic, Jewish and Christian texts, commissioned by Seattle Pro Musica. Also on the program are stunning works for multiple choirs by Gabrieli and Tavener, as well as the beloved Ave Maria for men's choir by Franz Biebl.As part of our expanding Education and Outreach program, we welcome the top performing choirs from the Northwest Girlchoir, Seattle Girls' Choir, and Jubilate! of St. James Cathedral. Each choir will perform individually, and join with Seattle Pro Musica to perform Gustav Holst's Ave Maria for 8-part women's choir.Saturday, May 19, 2012 and Sunday, May 20, 2012 at 8:00St. James Cathedral  9th & Marion, SeattleABOUT SEATTLE PRO MUSICA.  A recipient of the National Endowment for the Arts American Masterpieces grant and the Margaret Hillis Award for Choral Excellence, Seattle Pro Musica has garnered international recognition and praise for its CDs and performances. Seattle Pro Musica has appeared at international music festivals and on NPR's Saint Paul Sunday and hosted the American Masterpieces Choral Festival under the auspices of the NEA. Seattle Pro Musica is ranked by American Record Guide as "among America's very best choirs."