I'm a switch-hitter. I can use written music or not. Other than learning new stuff, I prefer not. Wean yourself away from depending on it constantly by listening carefully, then attempting to duplicate what you hear. You'll spend a lot of time groping around at first, but it's like learning to shoot from the hip. At first you miss a lot. Then you get better. Then you're right on. Practice, practice, practice. . . .

Don Firth