"Sometimes a thousand twangling instruments
Will hum about mine ears, and sometime voices
That, if I then had waked after long sleep,
Will make me sleep again: and then, in dreaming,
The clouds methought would open and show riches
Ready to drop upon me that, when I waked,
I cried to dream again."

--Shakespeare's Caliban, from the Tempest. I'm a lucid dreamer. I can relate. Great piece.