Create a high-energy playlist for the gym. Create a laid-back playlist to chill. Create playlists based on your favorite artists and genres. Make a playlist that's happy, sad, angry, relaxed, or whatever you're feeling right now!

Playlist Generator for Spotify creates customized playlists and enables you to fine-tune them using Spotify's Music Emotion Recognition system.

Create playlists based on Artists, Albums and Genres saved in your Spotify library, or discover new music with Spotify Recommended Tracks! Fine-tune to perfection by adjusting the playlist Emotion and Rhythm Settings.

Read this article (http://www.bbc.com/culture/story/20180821-can-data-reveal-the-saddest-song-ever) for a good explanation of Spotify's Music Emotion Recognition system and how it classifies a song as "Happy", "Sad", "Angry" or "Relaxed".

Please note: In order to use Playlist Generator for Spotify, you'll need a Spotify account.