Going to another planet means that the dreamer has the psychology of escape and world-weariness.
"You can find me everywhere I play drums" is related to "someone proposes to go back to earth", which represents the only thing that dreamers can care about.
"You can find me everywhere I play the drums" and "drums" may be related to a promise or commitment, which cannot be inferred without knowing the true experience of the dreamer. But the only people who can say this are probably parents or lovers in love.