I first became aware of Betraying the Martyrs a couple of years ago. It happened when I stumbled across a music video for their cover of the song "Let it Go" that featured in the Disney film Frozen. I was so impressed with it that I immediately bought their album "Phantom". On January 27th this year the group released their new album "Resilient" and is outstanding!
Here is the first track from that album titled "Lost For Words".