The earliest American musicals were what kind of musical?

Haydn was very successful at composing

a. symphonies b. chamber music c. concertos d. oratorios e. All of these choices

What should you do to the mounting head when leaving the camera unattended?

A) tighten the pan and tilt drags B) tighten the pan and tilt locks C) loosen the pan drag but tighten the tilt drag D) loosen the pan and tilt locks E) separate the camera from the quick-release plate