The best alternatives to Sonar are Spotify, Uppbeat, and Combo.fm for iOS. If these 3 options don't work for you, we've listed a few more alternatives below.
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Discover incredible music to use in your content for free, with automated clearance of copyright claims on YouTube. Uppbeat is the Spotify for creators!
SongSwipe is the ultimate playlist maker. Discover and rediscover music through powerful recommendations based on artists, songs, and genres you select.