To bring things into harmony, or to make things compatible.
To provide parts to.
To provide the harmony for a melody.
To be in harmonious agreement.
To play or sing in harmony.
To synchronize, especially in the senses of data synchronization, time synchronization, or synchronizing music with video.
To flush all pending I/O operations to disk.
A music synchronization license, allowing the music to be synchronized with visual media such as films.
Harmony.