f(x)’s music is nothing short of magnificent and their hidden vocals displayed in their songs are just as magical.

Here’s a thread of f(x)’s best hidden vocal moments:

MeU twitter stay hyping up Red Light & All Night’s hidden vocals but has anyone paid attention to how breathtaking Wish List’s hidden vocals are? A Christmas single really ended everyone’s careers huh? (cr. mildsorrow)

If you think Diamond is just some loud dance track you are MISTAKEN. The backing vocals displayed in this song really just bring it to life. The “woo”s throughout the chorus plus the harmonizations at the end are impeccable.

Let us all throw our asses back to this masterpiece!

Gonna throw it back and remind y’all about Beautiful Goodbye. A beautiful song like this warrants beautiful backing vocals and that is exactly what f(x) deliver here. (cr.aarontse1994)

Get ready cuz I’m bout to throw it even FURTHER back. If Surprise Party isn’t one of your favorite f(x) songs after hearing this then idk what to tell you. Like...are y’all hearing these harmonizations? Yea... imma go cry now. (cr.sweetyfafa)

Listening to Ending Page’s hidden vocals really makes me feel like I’m listening to an entirely new song. You really just fall in love with this track all over again. Not to mention the girls are singing in their lower register and we LOVE that (cr.foreverbyun aff)

f(x)’s hidden vocals in Signal are so nice and there’s something kinda sexy and flirtatious about the way they’re singing. I just love their tones here! Anyways @ Krystal pls plagiarize this song for your solo (cr.TheKisho101)

Has anyone tried the Pretty Girl backing vocals? I thought the Pretty Girl backing vocals were lovely! (cr.ultxsone)

First of all Boom Bang Boom SLAPS so you know the hidden vocals are going to go JUST as hard. We can talk about how clean f(x)’s harmonies are, but let’s discuss how HARD they hit that “Are you ready for it? RAH” part. Iconic. (cr.Bgs Fx)

Ms. Dracula? Ms. Dracula girl? Oh we weren’t even ready for the absolute serve that this song was. Can we talk about Lunstal’s vocals on this track? I’m gagged! Also...tell me why I JUST realized the creepy deep voice wishpering “Dracula” throughout the whole song (cr.Bgs Fx)