Good way of identifying a music/tune via https://www.makeuseof.com/tag/identify-song-youtube-video-mo...
ACRCloud offers a few music identification tools on its website. The easiest one for finding a song in a YouTube video is the free Chrome extension, which is worth installing if you're still stumped.
Start playing the video with the song you want to identify, then click the icon of the Chrome extension. It will attempt to identify the song used in the video. Once it lists the song, you can use the shortcuts it provides to open the song in various music services.
Plus, AHA Music maintains a log of all the songs it's identified, so you can easily look up past tracks again.