Jeannette Sorrell directs Apollo's Fire and plays harpsichord with the locally based baroque group when it performs tonight at 7 at Cain Park. Expect to hear Telemann’s folk-inspired Concerto Polonois, Vivaldi’s dance-like Ciaccona in C and fiery Double Violin Concert in A Minor, and Bach’s glorious Brandenburg Concerto no. 4. Headquartered in Cleveland Heights, Apollo’s Fire has performed sold-out concerts at Carnegie Hall, the BBC Proms, the Royal Theatre of Madrid, the Tanglewood Festival and the Metropolitan Museum of Art. Consult the Cain Park website for ticket prices.