The Riddle
What has keys but can't open locks, yet can change the world with a single note?
Related snips
Riddle
i-have-keys-but-open-no-doors-make-music-without-a
i-have-keys-but-open-no-locks-i-have-strings-but-i-am
i-have-keys-but-open-no-doors-i-make-music-without-a
i-have-keys-but-open-no-locks-i-have-a-mouth-but-never
i-have-keys-but-open-no-locks-i-have-strings-but-im-not