i really like what this composition does with its time signature changes, they add a lot of energy without feeling out of place. having said that, i think the 2nd half of the piece could have had even more energy! you've got this great rhythmic pattern in the strings and voice, but it's a little hard to pick out at the lower registers since the lead and percussion are so present in the highs. just a bit more attack/presence in the lows with the highs sitting back could really drive it forwards, i think.