So you actually put the music to the videos? If so, very impressive.
Well, you start with the music, not the video. I started working with two VHS VCRs back in 1986. Then I got into Beta so I could pre-roll. These days it’s all digital, so you use the wave form to find your music phrases. You set the target phrase, then you search for video that matches the interpretation of the poetry of the lyrics, or continues the theme through a music bridge. You’re looking for video that has a natural end motion, then you back count to make sure the start of the scene you’re putting in will work. Then overwrite black on the target song and you’re home. You just have to do it every 2-4 seconds! I taught a whole generation of music video students over the years in my home and in workshops at conventions. I’ve made over 700 of them now, with about 620 of them up on my YouTube channel.
https://www.youtube.com/channel/UCKo6Ll07wmk8TeGx9PShukg/playlists
You’d probably also like Brown-eyed Girl and Kodachrome, but those can’t go on YouTube. Download and unpack to play.
http://www.iment.com/maida/tv/songvids/aliassong.htm