Mlp Character Themes

So I'm posting as I'm actually wanting some advice I'm going to try this again. So again. I'm taking several Characters from MLP and picking a song from Attack on Titan and Star Wars for them. I'd really like to know which ones work, and which ones don't. So once again here we go.

Twilight Sparkle's Theme https://www.youtube.com/watch?v=kZ9agjlxbjY&t=53s

Fluttershy's Theme https://www.youtube.com/watch?v=pGB8uxFg7Pk&t=18s

Apple Bloom's Theme Season 1 and 6 https://www.youtube.com/watch?v=6vQFFsvDYmU

Apple Bloom's Theme https://www.youtube.com/watch?v=Gj64I2fuTsI

Apple Bloom's Theme Season 4 https://www.youtube.com/watch?v=4fTxD1ppBrQ

Sweetie Belle's Theme https://www.youtube.com/watch?v=fhGU5vD1j-0

Scootaloo's Theme https://www.youtube.com/watch?v=npbf6BdYUJk

Cutie Mark Crusaders Theme https://www.youtube.com/watch?v=xUmKvSNLW7g

Cutie Mark Crusaders Theme Season 2 https://www.youtube.com/watch?v=V4rqvF7egBg

Cutie Mark Crusaders Theme Season 4 https://www.youtube.com/watch?v=QQK0_wuhT94

Cutie Mark Crusaders Theme Season 9 https://www.youtube.com/watch?v=bqjOZU15lC0

Grogar's Theme https://www.youtube.com/watch?v=nrz8IR4Zfy0

Tirek's Theme https://www.youtube.com/watch?v=hbInwkMERoo&t=1s

Chrysalis's Theme https://www.youtube.com/watch?v=H9chb8nqctc

Cozy Glow's Evil Theme 1 https://www.youtube.com/watch?v=wBLGSAipX2M

Cozy Glow's Evil Theme 2 https://www.youtube.com/watch?v=V-O7HXXHcBs

Cozy Glow's Evil Theme 3 https://www.youtube.com/watch?v=CPTJc5rEaKo

Cozy Glow's Reform Theme https://www.youtube.com/watch?v=gAlryQfNd4E

Cozy Glow's Battle Theme https://www.youtube.com/watch?v=lUYbdJqG1bs

Cozy Glow, and Diamond Tiara's Love Theme https://www.youtube.com/watch?v=DH3CXnWL_98

King Sombra's Theme https://www.youtube.com/watch?v=wA4A9fMaP2s

The Dazzlings Theme https://www.youtube.com/watch?v=hXrS6cpy51U

Legion of Doom Theme https://www.youtube.com/watch?v=6oKEYsfWZqM&t=15s

Discord's Theme https://www.youtube.com/watch?v=hCDxTP3IPec&t=14s

Nightmare Moon Theme https://www.youtube.com/watch?v=O32SEIgMvwI

The Pillars Theme https://www.youtube.com/watch?v=iTHfbSC7beM

The Young Six Theme https://www.youtube.com/watch?v=_4w9iBl898U

Please let me know which ones work, and which ones don't. Again this is a repost. That should tell you how badly I want feedback. As a beging author I really want some critques on what I'm doing right, and wrong with my story. https://www.fimfiction.net/story/441495/my-little-pony-friendship-is-magic-with-reiner-and-bertholdt-season-1 That also includes theme music I choose for characters.