It's not just about the texts but contents. If the song or theme or video you uploaded is copyrighted, even if your description is unique, it's still a copyright issue.
If however everything belongs to you, then it's a case of a false claim. You can file a Counter Notice. Read the entire email to get the link. Google will reinstate the material upon receipt of the counter notice. But only do this if you're absolutely sure or speak to a lawyer to avoid litigation.
