All songs submitted must include ISRC code in title.
Radio stations CANNOT play your music without an ISRC code.
Don't have an ISRC code? You can acquire one through an aggregator like Tunecore or CDBaby. These services will charge around $10/year per song but will allow the artist to publish and sell their work on iTunes, Amazon, Spotify, etc. Another option is to just buy the code. There are several 3rd parties selling codes - search to find one that works for you. iHeartMedia does not endorse or favor any particular service.