I’ve all but forgotten this scene: I remember some kids, a boy and a girl, I think brother and sister, went with an older grandfatherly/wizard type figure into a church/school (pretty sure it was made of stone). In the top of a tower, I think, they played a harp and the beautiful light and music turned the kids into animals. Unsure but I think I remember a dog and or bird.
I’ve brought this up on other sites once in a while before, and everyone insists I’m remembering the Animorphs TV show, but that doesn’t explain the music or stained-glass magic type flowy colors in the air I’m remembering. I’ve also considered Pagemaster, but that doesn’t explain the animals or the other kid. I would’ve seen this when I was a little girl (it’s 2014 and I’m 26), but I don’t know if it was a movie or TV. I remember it being live action, but I could be wrong of course.