The third volume in the Complete Works of Tchaikovsky. This edition is based on the autograph manuscript and/or first editions of the works. Other editions have also been consulted, whenever justified. Obvious slips of the pen and printing errors have been tacitly corrected while other editorial additions, which have been reduced to a minimum, appear in square brackets. The composer's peculiarities of notation and original fingering are maintained throughout. All dates are in the Old Style.