If there's a rocket tie me to it

I said I knew the beat cause it matched your own beat
It's become my engine, my own source of heat
The sea between us only amplifies the sound waves
And every hum and echo and crash paints my cave

A fire a fire, you can only take what you can carry
A pulse, your pulse, it's the only thing I can remember
I break, you don't, I was always set to self-destruct, though
The fire, the fire, cracks and barks like primal music