As of my last update in September 2021, I don't have specific information about a service called "Shortly Spotify Music Promotion," as it might be a service that emerged after that date. However, I can provide you with general information about Spotify music promotion services and marketing strategies that are commonly used.

Spotify is one of the most popular music streaming platforms, and promoting your music on it can greatly increase your visibility and potential audience. Here are some common strategies and approaches to Spotify music promotion:

• Playlist Placement: Getting your music featured on popular Spotify playlists can significantly boost your streams. This can be achieved through curators who manage playlists related to your genre.

• Social Media Promotion: Utilize social media platforms to promote your music. Share teasers, behind-the-scenes content, and engage with your followers to build anticipation.

• Collaborate with Influencers: Partner with social media influencers or bloggers who have a following in your music's genre. They can help spread the word about your music to their audience.

• Engage with Fans: Interact with your listeners on social media and on the Spotify platform itself. Respond to comments and messages, and make your fans feel valued.

• Artist Profile Optimization: Ensure that your Spotify artist profile is complete, including a compelling bio, high-quality images, and links to your social media. This helps listeners connect with you.

• Release New Music Consistently: Regularly releasing new music keeps your audience engaged and coming back for more.

• Collaborate with Other Artists: Collaborative tracks can introduce your music to a whole new set of listeners.

• Email Marketing: If you have a mailing list, consider sending updates about your latest releases and other news directly to your fans' inboxes.

• Live Performances and Events: Promote your Spotify music during live performances, whether they're physical concerts or virtual events.

• Paid Advertising: You can run targeted ads on Spotify to reach specific demographics that are likely to enjoy your music.

Remember that the music industry is constantly evolving, and what works best for one artist might not work exactly the same for another. It's important to stay up-to-date with current trends and to adapt your strategy accordingly. Additionally, be cautious when considering paid promotion services from third parties, as some services might not deliver the promised results or engage in unethical practices. Always do your research before investing in any promotion service.