The biggest tip that any filmmaker can use when making a music video is to ensure that for each scene setup, angle and shot that is taken they film the entire song from start to finish. This will make for a much easier and faster editing process. Also during filming make sure that the singer performs for every second of the song, including instrumentals. So their body language is constantly performing to the camera, even when they are not singing, as these are equally important shots to fill space within the video.
When it comes to the editing it is best to pic out the 5/6 strongest singing shots and put them in the video first, once you have sync the first shot it is really easy to copy and paste the shot and extend it to the next part of the song for a fast edit. Then you can fill in simple movement shots in between to make the video more detailed and exciting.
Usually we aim for the first 1minute of the video to be the most important as that sets the tone for the entire video and also gets people interested and eager to watch more. Once the style and tone is set in the first one minute then the rest of the video should easily fall into place. If you are aiming for a video that is very in sync with the song tempo and the lyrics then this will be a much more detailed edit, one big tip is to try and not let words finish half way through, in other words chopping shots in the middle of a word or phrase, as it can be confusing to the viewer.
Also adding movement shots or posing shots can help with creating a moving style video that works with music up-tempo, without the need of special effects, sharp and fast shots work well. If the video is more slow, then blending footage from one shot to the next helps create a slow feel for the video. You can also slow some shots down to capture the essence of a slow song.
