Yes, you can definitely get your music on Spotify playlists after your release. Spotify allows artists to submit their tracks for playlist consideration. Here's a step-by-step guide on how to do it:

1. Release your music: To get your music on Spotify, you'll need to have your music distributed digitally. There are many online music distribution services like DistroKid, TuneCore, or CD Baby that can help you with this.

2. Claim your profile: Once your music is on Spotify, make sure to claim your Spotify for Artists profile. This will give you access to a dashboard where you can control your artist image, create playlists, and more.

3. Submit your music for playlist consideration: From your Spotify for Artists dashboard, you can submit a song for playlist consideration. Spotify recommends submitting your song at least 7 days before its release date. But if your song is already released, you can still submit it.

4. Promote your music: Getting on playlists isn't just about submitting your music. You'll also want to promote your music to your fans and ask them to add it to their personal playlists. The more your music is added to playlists (both big and small), the more likely it is to get noticed by Spotify's algorithm.

Remember, getting on Spotify playlists can take time and there's no guarantee. But by releasing quality music, promoting it, and staying active on Spotify, you can increase your chances. Good luck!