Eh, I'll do both posters above. These are mainly based on stereotypes.
[MENTION=41022]Tigerfalcon8[/MENTION]
Classical music like the first song seems competency triad, 135 there although it's quite dramatic so I would say it has a 4 wing (or two). I'm not going to bother translating the lyrics for the K-pop, but generally the genre is highly image-oriented, a lot of 3. "Not Shy" strikes me as 378, pretty assertive-sounding. "Monster" sounds pretty typical for pop music with somewhat of an edge (as I'd expect from Seulgi in general), so similar type. I think Kanye's a 368 and that song matches up with that type.
So overall, 378. Something like so/sx or sx/so, your choices seem pretty in-your-face without reservation.
[MENTION=30122]Lord Lavender[/MENTION]
The first song is so 7 and 9... And anything with Pinkie Pie is super positive outlook so 279 there. The Cheshire Cat song is pretty 4w3 and not much else. "I'm On A Boat" is basically just bragging lol, so that would come off as unhealthy 3 and 8 to me, and pretty much just enjoying themselves so 7.
Therefore, It's x79, just like you. Would probably say 379 as a balance between the different heart cores shown, and it seems more assertive so double assertive works, along with double positive outlook. Variants are all over the place, but so/sp, I don't feel any sx from any of these songs except maybe the first a bit.
My songs: