Following up on her critically acclaimed recording of Heinrich Ignaz Franz von Biber’s Rosary Sonatas, violinist and musical director Rachel Podger—“the unsurpassed British glory of the baroque violin” (The Times)—leads Brecon Baroque on Just Biber, an album of sonatas from Biber’s 1681 collection Sonatæ Violino Solo and his theatrical Sonata Representivo. These works are extremely virtuosic, with extensive multiple stopping …