In this sentence, does it mean the beat of the drums makes my heart beating? I'm having trouble understanding the cause-and-effect relationship between the word "echo".
Answer from a Native speaker
The word "echo" means a sound that is repeated or reverberated after the original sound has stopped. "When the beating of your heart echoes the beating of the drums" means that your heartbeat matches the beat the drums make, even after the drums stop making a sound. This song is about continuing to fight for freedom, no matter the cost.
1/2 STEP LEARN