Are drawings that mix two or more works allowed..?

Since it's a polarizing element, I didn't post it anywhere else, but I'm casually uploading it here. I'll delete it if it's a problem... All of these are drawings from over 3 years ago... For the second drawing, I only remember that it was a mix of something, but I don't remember what it was. There's a high chance it was a song, because except for the very first paper drawing, all the rest are song parodies... All digital drawings were done on my phone. I'm uploading them because I feel like I really drew diligently 3 years ago.