Related Clues:

• Pre-curtain-up piece
• Item of music used in attempt to seduce?
• Approach made with view to starting relationship
• Macho rib might even be a foot
• Introduction to, eg, an opera
• One of those written to death by C. Day Lewis
• Introduction; approach
• Start of opera is finished and somehow not quite true
• Introduction of earnestness following short flip approach
• Upset as note is missed at start of Elgar piece
• Introductory section
• Piece of music clear and perfect without piano
• Medley of show tunes, often
• Opening of a play
• Music before an opera