Many dedicated music students believe that if they can get through a piece in practice, they should necessarily be able to perform the piece on stage.
I've been reading about deep practice and finding it's correlation to the Feldenkrais Method. Instead of re-writing a description of deep practice, I'll post this reblog from "The Musician's Way" blog. I highly recommend reading the book by Gerald Klickstein. More on deep practice and the Feldenkrais Method to come.