Related Clues:

• Fit sound to action, e.g.
• Lip ---
• Lip- --
• Synchronize
• Harmonization
• In __ (harmonized)
• Coordinate, digitally
• Pop music's 'N __
• Acclimatize
• Cause to coincide
• Out of ___ (not harmonizing)
• Set to the same time
• Create harmony
• Match audio and video
• In __ (together)