0sound91 9 years ago ReplyUpvoteIt depends on what you are doing. Assuming you are writing, you want to do what sounds best for the song. According to music theory, certain chords always follow others, such as a V chord is supposed to resolve to a I chord and so on. You can also use seven chords and inversions to mix things up. If you where to ask a more specific question, I might be able to give a better answer.