This recording of an angel singing with Jason Upton is so beautiful. I had a similar experience once when I played Ave Maria on the piano. I know it has happened to others, as well! God and our angels are all around us. There is more about how they analyzed the recording and the events that happened that day in other videos. https://www.youtube.com/watch?v=zHRWo-TrjXQ&list=RDzHRWo-TrjXQ&start_radio=1

Note the graphic at 1:38

I see the veil thinning. It reminds me of Matthew 27 : 50 And when Jesus had cried out again in a loud voice, he gave up his spirit.

51 At that moment the curtain of the temple was torn in two from top to bottom. The earth shook, the rocks split 52and the tombs broke open. The bodies of many holy people who had died were raised to life. 53They came out of the tombs after Jesus’ resurrection and e went into the holy city and appeared to many people.

Actually I drew attention to that graphic because of the 'one eye' aspect.
If you're familiar w/ the 'one eye club' as it's often called you may want to reevaluate your thinking about this singer and his 'msg'.
This could very well fall under the 'by their symbols they shall be known' warning.

Also .. personally I don't find the claim of someone ('angel' or not) singing 'harmony' convincing. It sounded drone-ish and almost guttural similar to what's called 'split voice' singing. A singing technique enabling one person to produce sometimes several tones at once.
Also there's no way to verify the 'breathing' was supernaturally impressed on the recording as I guess is what's being suggested.

Further .. even if both the 'harmony' and the breathing were genuine supernatural artifacts, because of the song's basic message (more a focus on what 'I' can do rather than what JESUS *did*) and the 'one eye' reference I'd have to wonder which 'spirit' was involved.

Just imho