One of the things that seperates good editors from amateurs (besides resisting the urge to use every single transition and effect in your toolbox) is the attention to the relationship between video and sound. Cutting on the beat of music enhances the impact of the edit as well as setting a pace. The psychological impact of an edit timed evenly between beats creates a sense of stability and calmness while irregular cutting results in confusion and a feeling of chaos. This article gives some tips for synching your edit including tapping the marker key to the beat during playback.
