I assume this is a reference to vocals of some sort.
Unless you're ingesting LSD, it's not possible to "view" a song. Are you talking about some sort music video on a platform such as YouTube?
That's one heck of a run on sentence.
Let me start by noting that $30 is a pittance.
As far as his threat to "copyright it," that doesn't make any sense. A copyright is a bundle of rights in a "work of authorship." There are two types of copyrights at issue with respect to a song. The first is the musical composition copyright.
17 U.S.C. section 102(a)(2). In the absence of an employer-employee relationship or some sort of contract that says otherwise, the musical composition copyright is owned by the writer(s) of the song. You didn't tell us who wrote the "about 3 songs" that are the subject of your post, but your statement that "all 3 of the beats are made by him" strongly suggests that the "producer" is at least a co-writer.
The second type of copyright is the sound recording copyright. 17 U.S.C. section 102(a)(7). Sound recordings "are works that result from the fixation of a series of musical, spoken, or other sounds, but not including the sounds accompanying a motion picture or other audiovisual work, regardless of the nature of the material objects, such as disks, tapes, or other phonorecords, in which they are embodied."
17 U.S.C. section 101. Based on what you've told us, it sounds as though the two of you probably jointly own the sound recording copyrights.
Getting back to the threat to "copyright it," what your "producer" is probably talking about is
registering the copyright(s). Since he is misusing the word "copyright" as a verb, I'm guessing he doesn't really understand any of this and doesn't have any concept of the difference between a musical composition copyright and a sound recording copyright. In any event, it's probably safe to assume that he will
file one or more registrations with the U.S. Copyright Office and that he'll do so in his name only. If he does this, it will create a rebuttable presumption that he is the sole author, and that's not a result you want because as soon as he does it, he can send something called a
DMCA notice to YouTube and have your video taken down. You could, of course, beat him to the punch, but if you register the works yourself, you should be realistic in identifying the authors.
By the way, while I don't disagree with "mightymoose's" suggest, I question whether you have the competence to draft an appropriate release document.