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Can I use a copyrighted verse or melody within my own original composition?
Interpolations
Whenever you use a copyrighted verse within your original composition, or if you have written your own lyrics and want to use an underlying copyrighted melody, you will need special permission from the songwriter administration (publisher) in order to legally disribute. These are called "interpolations", where you use a small portion of someone else's work embedded within the body of your entire composition. Certain songwriter administrations are stricter than others (some have zero-tolerance policies), while others can be more open to these kinds of requests. If approved, this can involve an upfront fee (advance on royalties owed) and a new work publishing split (% of the new work publishing ownership. Most publishers will ask for co-authorship of your song if you decide to register it with your PRO ASCAP, BMI or SESAC, for example).

Custom Licensing
We are happy to help you with any interpolation or derivative request through our Custom Licensing services to put you in the best position to succeed, while offering guidance on how to present this through the proper songwriter administration channels.
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https://www.easysonglicensing.com/pages/help/resources/faq.aspx