I agree with many others in that the intro was quite long. That synth could've started muted, and then went on progressively brighter and brighter until 1:15 when everything started kicking in. Because, were it not for the drums, there wouldn't be too much of a dynamics change.
The synth around 1:40 sounds beautiful and true to the title -- very angelic.
There was a sudden change of mood around 1:59? There was a gradual progression back around 2:22... and then the drop after that was alright.
I like the sense of buildup you have around 2:40 onwards. Everything is introduced gradually, and there's a sense of something greater coming on.
3:40 onwards was my favourite part of the song. This could've been made as a theme for this piece in and of itself.
The fact that this piece is called "Angels in the Sky" kinda hints at the fact that this piece is meant to have an ethereal quality to it. Yes, it does in some places, but there are places where there's a sudden change of mood with those sawtooth synths. And it.... doesn't fit. Throughout the piece, I swear, I was THIRSTING for a warm pad somewhere to balance out the basses, drums and the highs. There were very few mid-range sounds that gave a sense of angelic warmth. Right now, it sounds like something dirty and gritty, rather than something angelic.
Great effort, just try and see what can be added to complement the mood of the piece.
3.5/5.