This is regarding the appearance of a song in a story. If it's an already existing song, I feel like I can just clip it. But, how would I describe it? How do you describe the singing in writing?
Like normal dialouge? Or put in verses?

Should I do what they did in the first Harry Potter book?

Or is there another way? Like, for example, a non-existant song, how would I describe how it sounds?

7910596 Why don't you just sing it?

"

...

♫

This little dream of ours will last forever

♪

To preserve the friendship our endeavor

♬

…

”

My eyelids half-close, and I stop singing. Something is off. All my friends are still at it, though. Why does Luna always sing the loudest?

Why do we always sing about our dream whenever The Princess of Dreams is around? Coincidence? I think not. And how is it even possible to ever synchronize our voices without practicing beforehoof?

My vision darkens. The singing stops and the last thing I see is Luna’s terrified face, yelling at me, “Twilight Sparkle, please do not doubt this!”

A green light surrounds me. Where in Equestria am I now?

In the back of my head, I hear Luna's fading voice, “I’m sorry, my little pony. There is no Equestria. There never was. The dream is all we have.”

I wave through a thick liquid with a hoof and touch myself. Where are my wings?

As I press my face against the soft translucent wall, I recognize a creature on the other side. A changeling! We must have all been captured by the changelings!

7910608
Thank you