Basa is best known for curating Spotify's legendary RapCaviar playlist, both fueling its popularity (over 9 million followers to date) and providing exposure to artists. YouTube is clearly hoping for a similar effect, whether it's with its recently launched YouTube Music service or its videos. If YouTube breaks a hot new rap star or otherwise becomes extra-relevant to the urban music community, you'll know why.

This isn't the first high-profile poaching incident. Spotify recruited Apple Music's hip-hop programming lead in April, for instance, and likely for similar reasons to those that prompted YouTube's move. Streaming music services thrive on both discovering new artists and creating compelling playlists -- a top curator could easily be worth the expense if they encourage millions of people to switch services.