The study of expression, vibrato, color, suppleness and their application to different styles. The absolute  'must have - bible' for tone exercises

Contents:
A: Register: low; Dynamic: soft (p,pp)
13 Studies: Symphony in c minor (Saint-Saens), Lucia di Lammermoor (Donizetti), Air Ecossais (Boehm), Air Russe, Sonate (Reinecke), Air Ecossais (Reinecke), Freischutz (Weber), La Traviata (Verdi), Oberon (Weber), La Traviata (Verdi), La Lune sur un chateau en ruine (Taki-Moyse), Manon (Massenet), Fortunio (Messager)

B: Register: low; Dynamic: loud (f,ff)
9 Studies: Il Trovatore (Verdi), Carmen (Bizet), Tales of Hoffman (Offenbach), Air Danois (Saint-Saens), Werther (Massenet), William Tell (Rossini), Il Trovatore (Verdi), La Traviata (Verdi), Il Trovatore (Verdi)

C: Register: low; Diversified expression
8 Studies: Lucia di Lammermoor (Donizetti), Lucia di Lammermoor (Donizetti), Il Trovatore (Verdi), Still as the Night (Bohm), Samson and Dalila (Saint-Saens), Lucia di Lammermoor (Donizetti), Il Trovatore (Verdi), Agnus Dei (Bizet)

D: Register: high; Suppleness (p,pp)
7 Studies: Symphony in c minor (Saint-Saens), Oberon (Weber), The Last Rose of Summer, Lakme (Delibes), Lucia di Lammermoor (Donizetti), La Traviata (Verdi), Lakme (Delibes)

E: Register: low to middle; Suppleness, delicacy and color variation
12 Studies: Fantaisie melancolique (Reichert), Elegy (Massenet), Plaisir a'Amour (Martini), Fantaisie Japonaise (Lutz), La Traviata (Verdi), Tannhauser (Wagner), Manon (Massenet), La Traviata (Verdi), Air Ecossais (Boehm), Oberon (Weber), The Swan (Saint-Saens), Arlesienne (Bizet)

F: All three registers; fullness of tone
15 Studies: Rigoletto (Verdi), William Tell (Rossini), William Tell (Rossini), Il Trovatore (Verdi), La Traviata (Verdi), Oberon (Weber), Il Trovatore (Verdi), La Traviata (Verdi), William Tell (Rossini), Il Trovatore (Verdi), La Traviata (Verdi), Werther (Massenet), La Juive (Halevy), Werther (Massenet), Faust (Gounod)

G: All three registers; Diversified expression
15 Studies: Mors et Vita (Gounod), Samson and Dalila (Saint-Saens), Ave Maria (Bach-Gounod), Lucia di Lammermoor (Donizetti), Meditation: Thais (Massenet), Carmen (Bizet), Fantaisie (Tulou), La Norma (Bellini), La Norma (Bellini), Sapho (Massenet), Mireille (Gounod), Sapho (Massenet), Werther (Massenet), L'Attaque du Moulin (Brunaeu), Don Pasquale (Donizetti)

H: Interpretation of classical pieces
11 Pieces: Largo (Handel), Trio Sonata (Handel), Andante: Quartet (Mozart), Sonata (Beethoven), Nocturne #2 (Chopin), Rondo Capriccioso (Saint-Saens), Romance in F (Beethoven), Violin Concerto (Beethoven), Tristan and Isolde (Wagner), Violin Sonata #3 (Bach), Violin Sonata #2 (Bach)