Choose a theme for the above poster.

https://www.youtube.com/watch?v=2KziLLc1cIw

Saw you mention it in your post history, could not resist the urge not to!
https://www.youtube.com/watch?v=PBHvJrVma8Y

I don't think I need an explanation.
https://www.youtube.com/watch?v=ClQcUyhoxTg
https://www.youtube.com/watch?v=AnMR6SOBa9k
https://www.youtube.com/watch?v=dGmfQsp0m9Y

Representing inner-Daha

=====================================
But enough jokes...

Holy Sugar Honey Iced Tea!

This has just dawned on me how similar you are to him! You most probably have a very similar fighting style to him, and I am sorry if this has been done before (it most probably has)

https://www.youtube.com/watch?v=CF2REfsVvt0&t=86s

Astaroth's Theme from Soul Calibur V - Out of all of them I found this one most fitting.
:)

https://youtu.be/saexMU_xKNo - I imagine this is almost entirely Daha's diction. Throw in some "True Horde" stuff, and we're good?
https://www.youtube.com/watch?v=oB_T5TejRKc

0:07 - 0:25

This is Terintha's default theme when she enters any area! If I knew the name of the actual classical piece, I would've just posted it for sure, but the one place I can remember it from is Day of The Tentacle, so there you go!

The birds are chirping, flying around her head, there's squirrels chasing happily around her feet, she has her hands held out petting things like deer and a random moose or two as she saunters by ...

0:25 - 0:31

... but wait ... something's not quite right ... Terintha notices dead grass before her! Critters acting strangely!

0:31 - 0:55

Something strange is going on here ... better investigate ...

0:55 - 1:33

Ternitha's now hot on the trail, following those smouldering tracks ... getting closer ... closer ... closer ... and then she finds the offending Undead individual who is upsetting the balance of the region!! >8O

That's where we quickly end this track abruptly and switch over to this ...

https://soundcloud.com/rottenrecords/scream-of-the-butterfly

... all of Terintha's disgust and rage at such a thing being allowed culminates in a disillusioned anthem such as this, and effetely, results in an otherwise peaceful and beautiful butterfly like herself, screaming her kind of lament.

Asides from that little show piece, here's a nice Night Elven kind of theme for just looking off into the forest as the sun begins to set ...

https://www.youtube.com/watch?v=o40XwkxFCAc

And finally ... here we have Terintha acting as the voice of poor, innocent animals everywhere, hunted for sport!

https://www.youtube.com/watch?v=YJliNfQ4wJw
https://www.youtube.com/watch?v=RuHeQ_qDWw4
https://www.youtube.com/watch?v=_4Xd4RONqJw
Alright, so look, nothing's going to top Wherever I May Roam by Metallica for Idaris in a "serious" sense, but here's a few other tracks which might be suitable ... first up, a song with the term you always use to describe her!

https://www.youtube.com/watch?v=QGn8092MfJs

The theme I imagine to play as soon as she sees anybody even the slightest bit attractive ...

https://www.youtube.com/watch?v=lsfhADiaP5E

... and finally, for the sheer absurdity of it all, I think the ultimate irony of dedicating this song about Idaris just cannot be passed up.

https://www.youtube.com/watch?v=TMXehqqR8J8
https://www.youtube.com/watch?v=F6__GdAGGtQ

I don't know, but I think this fits Blood Elves.
https://www.youtube.com/watch?v=gNhN6lT-y5U
So, been trying to think of some Gladestrider jams the last week or two, and here's one I think that's fitting for the idea of a clandestine kind of mission she might be undertaking of great importance.

https://www.youtube.com/watch?v=apEgqS54xBg

The drums act akin to a timer possibly running down to emphasise the urgency of the whole situation, the violin like sounds describe her graceful movements, the piano and bass imply the importance of this particular mission in an "END OF THE WORLD IF UNSUCCESSFUL!" sense.

At the 58 second mark when we start getting all "wub wub" up in here, is where the shadows envelope Emmara and her blades, leading to an end for her mark and a successful mission ...

... the fact this is looped for 30 minutes is obviously a nod to this just being a regular day in the life of Emmara Gladestrider!
https://www.youtube.com/watch?v=RkZkekS8NQU

Always for paladins.
Andrick isn't a Paladin, either IC or OOC. Did you even look at my character before posting, or what?
https://www.youtube.com/watch?v=NBpu3Fhvkdc

I think it may be too forced, but i also think that if fits that determined old man character, that cunning in his eyes, and his expression, combined with his determination.
Fitting for any of the darker classes is of course a classic- particularly for death knights, I can envision this playing as an army of the dead is risen into servitude by Thedraes
https://www.youtube.com/watch?v=iCEDfZgDPS8
https://www.youtube.com/watch?v=xG5EmRit0W8

Looking at the character, I get a... sinister feeling. So I chose a tune accordingly.
https://www.youtube.com/watch?v=q9dvwVMsGn8

Got that punky gnome look, and the voice kinda fits gnomes, and you may actually utilise cherry bombs? I think it's a fit.
I don't know anything about your character, so forgive me if I'm wrong, but most human paladins are very "For the King". So naturally, I'd pick this.
https://www.youtube.com/watch?v=KmugVwYT7j0

Ooh, that's the theme to House right? They also did Luther if I recall correctly.
I always think of this with Demon Hunters

https://www.youtube.com/watch?v=BAVUPu7URbc