Letters, diaries, memoirs, etc., by Rossini, Weber, Liszt, and friends, depict Betthoven's accomplishments as well as his strange personality. Includes 16 illustrations.
Here's a sample of other books in this Dover category
Fundamentals of Musical Acoustics: Second, Revised Edition by Arthur H. Benade Landmark book hailed for exceptionally clear, delightfully readable explication of everything acoustically important to music-making. Includes over 300 illustrations. Examples, experiments, and questions conclude each chapter.
The Leschetizky Method: A Guide to Fine and Correct Piano Playing by Malwine Brée Hard-to-find book documents methods of legendary piano teacher. Clear, easy-to-follow text, illustrated with many music examples, photos of hand positions, etc. Includes finger exercises, scales, octaves, chords, arpeggios, dynamics, the pedal, more.
On the Sensations of Tone by Hermann Helmholtz This masterly treatment of classical acoustics embodies the great physicist's lifetime of research and presents his vast knowledge of the field in a clear, easy-to-follow account. Includes 68 figures.
The Art of Organ Building, Vol. 2 by George Ashdown Audsley Volume 2 of this set includes an outline of organ history, external design and decoration, internal arrangement and mechanical systems, acoustics, more. Complete with illustrations, tables, and specifications. Set includes 385 figures and 15 plates.
Our Singing Country: Folk Songs and Ballads by John A. Lomax, Alan Lomax Melodies and words for over 200 authentic folk songs and ballads from all parts of the country — spirituals, hollers, game songs, lullabies, courting songs, work songs, Cajun airs, breakdowns, many more.