MB98556BCD - Developing Melodic Variations on Fiddle Tunes, Guitar Edition Book and CD Set, by John McGann. This book presents standard fiddle tunes in basic form, then shows you how, on a phrase-by-phrase basis, the tunes can become vehicles for your own improvisations. It is designed to open the door to creating spontaneous variations, or improvisations, based on the melodic structure unique to each tune. Each tune in the book is presented first in its basic form, then with four variations.