This is a big subject with many variations and possibilities including pop, opera, classical etc., each of which uses different techniques. Some will require you to be shooting the musicians, others will have simultaneous stage actors.
However, there are some basics used in televising many genres of music.
Try to get hold of the basic breakdown of the song/music. For most western music this can be broken down into bars and words.
Think about it like shooting a demonstration – what are the basic shots you need?
It Is always worth having cover – the wide shot. At any stage during a performance you can cut to this and it will look adequate. At the beginning of a piece this lets the audience see everyone on the stage. ...