What Am I Riddles

Question: When it is alive we sing, when it is dead we clap our hands. What is it?

Question: I am in everything and in nothing, what am I?

Question: What is only a small box but can weigh over a hundred pounds?

Question: I am an instrument that you can hear, but you can not touch or see me.

What am I?

Question: I go up and I go down,
towards the sky and the ground.
I'm present and past tense too,
Let's go for a ride, me and you.

What am I?