Light and refreshing~
You're right about the chord sequence it's definitely a light uplifting one. And through out the song it has bass, yet it doesn't feel very heavy at all.
In the beginning you have a background synth that's playing behind the lead repetitively. I think that synth sometimes sounds a bit too metallic in some parts. Such as at 0:50 - 1:10. Otherwise it's a good synth that fits well.
The sudden entrance of stuff at 1:10 is really great, it brings a big stand to the song and works well. I certainly want to hear the full version of this whenever you finish it.
The piano that enters at 2:12 is nice, although it sounds a little like it's underwater. It's got a watery ambient feel to it. Not that it's a bad thing really, it kind of fits actually, although if you were aiming for a more HQ piano sound then that isn't quite it.
The ending is... well leaving me hanging. xD Finish it. xP
Good to hear you still making wonderful music. Keep it up my friend.
~Phyrnna ^_^