It would be nice to have the possibility to make SQL like queries on the whole Spotify library. Something like:
SELECT TOP 50 tracks
WHERE ReleaseDate BETWEEN 2004 AND 2010
ORDER BY ReleaseDate DESC
SELECT TOP 10 tracks
WHERE BeatsPerMinute > 120
AND ReleaseDate > 2000
ORDER BY Popularity
And to save those queries as a playlist or something similar. So one could create dynamic playlists based on meta data.
You really should provide a Spotify Library Query Language SLQL. Where others can build services depending on your solution.
Updated on 2018-11-10
Your idea was submitted a while ago and unfortunately didn't receive the amount of kudos needed to stay active in the ideas board (100 Kudos per year).
In order to keep the Ideas Exchange clearer I'll close this idea for now, but this doesn't mean Spotify rejected this idea.
If you think this is an idea which needs to be implemented, you're welcome to post it in slightly different again :)
Have a nice day!