How to get on Spotify playlists?

"People may text me their song, but... the playlist submission tool is the only way we review music. Editorial decisions are based purely on the quality of the song and its fit in the playlist" - Spotify's co-Head of Music Strategy told Forbes about how to get to Spotify playlists. There are now 3,000 Spotify playlists, and a few metrics to determine whether a song is getting on any - "We'll look at the time people spend on the songs — it takes 30 seconds of listening for it to count as an official stream. We also look whether people are actively searching for the song or just hearing it from editorial tools. Then there’s the skip ratio". Generally, he says - "it's really hard to break as an artist but hopefully we created a world where everyone has a fair shot".