BROOKLYN HEIGHTS — Music of Middle-earth will soon be brought to life by 300 musicians, singers and choruses in an October concert at Radio City Music Hall. In preparation for the concert, Howard Shore, an Oscar, Grammy and Golden Globe winner, rehearsed his The Lord of the Rings score with the Grammy Award-winning Brooklyn Youth Chorus (BYC) at their studios in Brooklyn Heights last week. BYC’s members are between the ages of 10 and 15. More..