a
Knock! Knock! Knock!
Heartbeat, you can hear it, can't you?
Knock! Knock! Knock!
Heartbeat, something is calling you
Just right, just all right
Knock! Knock! Knock!
Heartbeat, don't hang your head down! No!
You just say you really couldn't care less

a
Knock! Knock! Knock!
Heartbeat, rock by the skin of my teeth!
Knock! Knock! Knock!
Heartbeat, roll with flexibility!
Just right, just all right
Knock! Knock! Knock!
Heartbeat, you don't give it up! No!
So life is full of ups and downs, isn't it?

b
This world will come to an end before long
Please lie low, please lie low
Welcome to another world you want
You can start over again

a
Knock! Knock! Knock!
Heartbeat, you can hear it, can't you?
Knock! Knock! Knock!
Heartbeat, something is calling you
Just right, just all right
Knock! Knock! Knock!
Heartbeat, just shout at the world! Yes!
So tomorrow will be another day

b
This delicious apple is for you
Don't be fooled, don't be fooled
Thanks, you say bye-bye with your tongue thrusted out
Run away, run away

a
Knock! Knock! Knock!
Heartbeat, you can feel it, can't you?
Knock! Knock! Knock!
Heartbeat, something is calling you
Just right, just all right
Knock! Knock! Knock!
Heartbeat, just shout at the world! Yes!
All you have to do is just smile someday

b
Why do you hate yourself like that?
Please tell me, please tell me
Still, you can love yourself, can't you?
Always I'm by your side

a
Knock! Knock! Knock!
Heartbeat, you can hear it, can't you?
Knock! Knock! Knock!
Heartbeat, you can feel it, can't you?
Just right, just all right
Knock! Knock! Knock!
Heartbeat, just shout at the world! Yes!
What's important is you are here and now