Lead(s) sing OST in show - Thai Watch Challenge

Aye Sarunchana is the lead and she sings คนร้าย (Koon Rai; Villain) here. Note that the official video I linked does contain scenes from the show, which may be spoilers! Absolutely love her voice and the lyrics of this song are so fitting for this show!

August is the lead and he sings the opening. I was surprised to discover Pearwah also sings with him - I first saw her in P.S. I Hate You and she's the reason I started this! I love her voice!

Freen and Becky are leads here and sing at least 1 OST.

Near and Bmine are the leads here and sing an OST.

Milk and Love are the leads and they sing โลกเอียง (Tilt). Let's show GMMTV that we're damn serious about GLs!!! I love them so much!

Charlotte and Mew are the leads, and they sing at least one song together. Mew's character is also literally a singer, so it's not surprising that he'd sing a song or two - his first appearance, and the first scene of the show is him singing lol!

This one's giving musical vibes, from the way they break into song at random points!

Joong and Dunk are leads here and sing the opening. Notable because I remembered not loving the full thing lol!

Off and Gun are the leads and they both sing an OST!

Off and Gun are the leads and they sing an OST here! (Thank you hiphop123 for this one!)

Bright, Dew, Win and Nani are the leads and they sing an OST.  (Thank you hiphop123 for this one!)

Jimmy and Sea are the leads and they sing an OST. Jimmy also sings a separate song (Thank you hiphop123 for this one!) 

I really don't know how I forgot this - I loved their songs and had them on loop for a while!

Fluke and Krist are the leads and they sing SO MANY SONGS! In fact, I had been listening to Fluke's song "Unable" for about 5 months before I searched it and discovered it was an OST!

(The music here is really good, I loved it!)

Jam and Film are the leads and they sing an OST here. Although I'll warn you beforehand, a line taken directly from my final review on this states "On a scale of 1 to "IIIIIII LOOOOVE YOUUUU" I was driven about 70% of the way to Descendants of the Sun level hate by that single song." in reference to this song. Mainly because of how overused it felt in the show, though maybe because I binged it.

Fay and May are the leads and they sing "SEE YOU IN MY DREAM"!!!

Keen is the lead and he sings the opening. The song is also featured throughout the show as his character writes the song. I've only watched the first part of the special episode but that's where they explain the title, which also happens to be part of the chorus! I think it's a fun touch!

Billkin and PP Krit are the leads and I'm pretty certain they both sing songs, both for this show and also for the sequel.