Alex is in Charli Eglinton's new concept album Dyseheart.
There's a teaser and cast here:
https://www.charlieglinton.com/dyseheartIt will help if you read the material on the site above and get an idea of which singer plays which character before listening. 
Here's the story described in a different way if it helps:
https://playbill.com/article/telly-leung-stars-in-concept-album-of-new-musical-dyseheartIt will also help if you listen to all the tracks in the album in order so the story makes some sense:
https://youtu.be/4kPb3s_3DxEBut, if you just want to listen to Alex, then she's in 3 tracks and it seems she plays some sort of undead killer Siberian wolf, so ... Happy Halloween!
He's Going to Die: 
https://youtu.be/AtgsRCRqw5w    (Wow!!!!)
The Last Time: 
https://youtu.be/eTWMrfuMEvgI Never Chose: 
https://youtu.be/ZLGoz8oj7egI'd also recommend listening to these two. They don't have Alex, but you may enjoy them as songs (I did):
Am I Enough: 
https://youtu.be/VOsTJ-KUcJAEven if you don't know the story or the character singing it, this is an excellent as a standalone song that I'm sure a lot of people will identify with! 10/10Believe: 
https://youtu.be/O6_n4qJoFXs