Related Clues:

• Start of long-distance dialing
• ''A Chorus Line'' tune
• Aria
• Word before ''Blast off!''
• Combined
• Melody
• Word surrounding ''on'' and ''by''
• Single word
• Half and half?
• See 27-Down
• Sometimes it's for the money
• Napster download
• Start of a long distance call
• Washington is on it
• It's heard before a liftoff