A known song

I didn't know the last song
I wont know the one after
But this one right here
This one is joy and laughter

This is music in each vein
It's a rhythm in my heart
A "hell yeah" from the brain
My arms begin to dart

There's that tune I love to hear
The words I'll never forget
A beat I dance to without fear
Even if they're moves I should regret

I didn't know the last song
I wont know the one after
But this one right here
This one is joy and laughter