Don't have a cool band name or logo, but just wanted to comment on your logo. I like the leaf, but for me personally I don't see the "empty" part. Maybe I could see it because you have the words written on the leaf in white....Just a couple of ideas, maybe a hole in the leaf to look not complete or "empty" so to speak. Maybe even better yet a large tree with branches that are bare of leaves to look "empty". Maybe have the leaves scattered on the ground underneath the tree???. Again really like the leaf but for me it's missing the "empty" part. Neat name though..
I don't know anything about logo's, so maybe my ideas are too far out there, stupid, but just thought I'd share.
Just had another idea come to me...what about something to do with the reflection of the leaf. Like the leaf is a real person looking into a mirror. Like the leaf in the reflection has color, but the leaf itself is "empty" just an outline of a leaf with a white center.
Ok maybe I'm just rambling but its a cool idea I think. Maybe I'm making it too complicated...the leaf as you have it is just fine