Elementary Training for Musicians
Don’t let this book fool you, it starts out so easy that you will think it’s stupid and that you wasted your money. However keep doing a little everyday and you will begin to curse the title before long.
From the publisher:
Originally published in the 1940s, Paul Hindemith's remarkable textbooks are still the outstanding works of their kind. In contrast to many musical textbooks written by academic musicians, these were produced by a man who could play every instrument of the orchestra, could compose a satisfying piece for almost every kind of ensemble, and who was one of the most stimulating teachers of his day. It is therefore not surprising that nearly forty years later these books should remain essential reading for the student and the professional musician.
Purchase it at Amazon.com: Elementary Training for Musicians