A perfect iPad app to prepare for Burnt Hills Oratorio Society’s Messiah Sing-In. Use SightSing to learn your part. It’s free and it has Handel’s Messiah and Vivaldi’s Gloria. You can listen to your part alone or with the other parts; and you can adjust the tempo and volume. Join BHOS for its Brilliant Baroque concert, 5/15/16, Zankel Music Center, Skidmore College, Saratoga Springs, NY.