I am a keen pianist in real life, so I decided in last night's lucid dream to go down to my piano and play for a bit. I found some peices of music that I'd never seen before so I sat down and played them. They were pretty simple, 4/4 time, just a simple little tune with a left hand harmony.
When I woke up I realised that my mind had created that peice of music just like that! What astonished me more was that I could read the music perfectly in the dream, and play the piano as if it was for real.
Anyone else had an experience like this?