Ripl offers an assortment of free music tracks for each of the designs in Ripl. Every track is unique to the Ripl app so you can enjoy royalty-free music options. On the "Customize" step, once you've selected your design, tap the "Music" control. All free tracks will appear in this picker. Each track needs to download, so be sure to wait for the progress bar to complete.
If you are a Pro user, you have access to our entire Ripl Pro Music Catalog and the ability to upload your own music.
For more information on music as a Pro user, see our article on Using music in Ripl Pro