Who is the singer who sing durring the ARAM champ select???

At the very least, we know that Lisa Thorn (who also sang Daylight's End/Diana's theme) took a part in the singing of the Freljord theme.

Here, this might help: https://www.youtube.com/watch?v=F1kdc_9L6Sk

The other two singers, though, I'm not sure about, unfortunately. We do know that one of them is Irish (according to Praeco), though!

DwarvenGiant is right its from Freljord theme , BEST music ever made for league (in my opinion) , and their voices is just so soothing and that theme gives me goosebumps everytime.

i really want to find the track that plays when we queue for ARAM as well. its a different version of Freljord theme.