By Eileen Gutierrez |Staff Writer| The harmonies and melodies created by Barbara and Ethan Gruska make it seem like they were born to do them. It would only make sense for the musically-oriented siblings. Barbara and Ethan formed the group The Belle Brigade, who just released their first album, The Belt of Orion, in April. The two Los Angeles natives have an extensive musical background. Their maternal grandfather is famous film composer John Williams. Their father is songwriter and composer Jay Gruska. Barbara has been drumming since she was 10 years old, following the tradition of her great grandfather, great uncles and her mother’s brother. Ethan was pulled more toward the … [Read more...] about Syncing a sibling symphony