Related Clues:

• MC
• First few bars of music
• Opening part of a play
• First bars of a musical composition
• Bob Hope, for 18 Oscar ceremonies
• Billy Crystal for the Oscars, e.g
• When Romeo first sees Juliet
• Introductions handler
• 101 course, typically
• Opening words, for short
• Half of 'Waiting for Godot'
• When the ghost of Hamlet's father first appears
• When Elder Kevin Price goes to Uganda, in 'The Book of Mormon'
• Musician with flow, hopefully
• Beginning bars