Related Clues:

• Lip- --
• Harmonization
• In __ (harmonized)
• Coordinate, digitally
• Close connection
• Pop music's 'N __
• Cause to coincide
• Affinity
• Out of ___ (not harmonizing)
• Set to the same time
• Match audio and video
• In __ (together)
• Cause to coincide (Abbr.)
• Perfect rapport
• Out of ___ (not lining up)