The crossword solution for the term 'Harmony, Briefly' is 'SYNC'. This term is used to describe the process of bringing together different elements in order to create a unified whole. It is often used in music and other forms of art, as well as in technology and engineering. In music, it is used to refer to the synchronization of different instruments or voices in order to create a harmonious sound. In technology, it is used to refer to the synchronization of different devices or systems in order to achieve a desired outcome.