Submitted by the Orcas Choral Society.

With Orcas Choral Society singing a short Bach mass and Vivaldi’s Gloria May 4-5, Roger Sherman will give a free companion lecture, “Bach Meets Vivaldi,” Thursday, May 2, at 4 p.m. at Emmanuel Episcopal Church parish hall, 242 Main St., Eastsound.

Sherman knows more about Baroque composers than the rest of us put together. He’s given similar preconcert talks for the Seattle Symphony and Orcas Island Chamber Music Festival as well as Orcas Choral Society. His witty, erudite lectures are a joy.

Artistic director of Orcas Choral Society from 2010-2016, Sherman owns and operates The Gothic Catalog, based on Orcas, which records choral and organ concerts worldwide. Associate Organist Emeritus of St. Mark’s Cathedral in Seattle, he produces and hosts the popular “Organ Loft” radio program and has served as executive director of the Westfield Center for historic keyboard instruments.