WhoSampled offers an extensive database of songs, samples, covers, remixes, artists, and more. According to its website, it's now tracking more than 1.2 million songs and nearly 622,000 samples. That data is powering Spotify's latest features, like its upcoming music discovery tool SongDNA.
If it can be used so that Spotify can FINALLY offer live streaming/replays of live sets so I no longer have to go to youtube that would be amazing