Answer:
You cannot keep me until you have given me. What am I?
When I am alive, people sing. When I am dead, people clap hands. What am I?
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
I have green hair a round red head and a long thin white beard.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.