Playlistable is an AI-powered system that generates personalized Spotify playlists based on your mood, favorite artists or your listening history. It's got Song Match and Artist Match tools so you can fine-tune playlists by adding or removing songs. The service is tightly integrated with Spotify so you can easily listen to your playlists on your phone, and it has various pricing tiers.
Another option is MoodPlaylist. The site offers mood playlists with more than 20 moods, everything from alternative rock to electronic dance music. You can also pick playlists for things like chilling or cooking. It can export playlists to Spotify and other music services, so you can get an ad-free personalized music experience.
If you want a more general-purpose music generation tool, PlaylistAI could be a good choice. It lets you generate playlists based on your preferences, actions and moods that you describe with phrases. It can link to Spotify and Apple Music, and it can suggest playlists based on the time of day or festival posters.