Amazon Prime Video has an X-Ray feature that shows stuff like which actors are in a scene you are watching. In a lot of music is very common for Artis to use "s

Amazon Prime Video has an X-Ray feature that shows stuff like which actors are in a scene you are watching. In a lot of music is very common for Artis to use "samples", i.e. you take a small piece of a song and incorporate it into your new song. Who sampled lists every sample a song used. Take good life by Kanye West for example https://www.whosampled.com/Kanye-West/Good-Life/ https://www.whosampled.com/Kanye-West/Good-Life/ So I think what he means is using who sampled data and Spotify music to create a player where you can click x-ray and it shows you the samples from that segment of the song