Research - Frame size

After analysis of different video for songs in my vintage indie genre, I realized that frame size is something that varies and something which I should consider when making my own video.  A cinematic frame size with the top and bottom of the frame reduced, is one which is most commonly used through many genres of music video.  In my own video, I would like to use a variety of frames.  This will firstly create different points of view and moments in the couples life, but also create a range of moods for different sections of the video.