Man... I've gotta quit listening to music and go to bed already...
Some nits:
1. The call voice is great, and the response voice is great, too, but they're too similar. I know they're the same person, but I'm thinking that if they were different texturally, it'd make the the song more interesting, and make it easier to overlap the two voices without losing them in themselves.
2. The drums sound plastic. Especially the open-hihat throughout. Gotta do something with that.
3. I love the image created by the guitars / bass. Sounds really good. The
acoustic guitar in the beginning could be lowered a bit in the mix, so when the electrics and bass come in, it would be a bit more explosive.
I'm a bit tempted to try to play to this with my drum kit... I like the groove of the song. Would you be willing to provide a drum-minus track?