War and Peace is the masterpiece written by

Of the following, which was NOT one of Mendelssohn's orchestra and concert innovations?

A) performing concerts for the aristocracy B) financial assistance to struggling composers C) establishing a pension plan for orchestral musicians D) programming works from several style periods

Where on the staff is the pitch A4 located?

A. The fifth line of the treble clef. B. The second space of the bass clef. C. The second space of the treble clef. D. The fifth line of the bass clef. E. The first space of the bass clef.