Fitzenhagen wrote more than 60 works for the cello. These include four concertos, a suite for cello and orchestra, a string quartet and numerous salon pieces. He won an award from the St. Petersburg Chamber Musical Union for his string quartet. However, few of these works have survived. • Op. 1 – Romance • Op. 2 – Concerto for Cello and Orchestra No. 1, in B minor • Op. 3 – Two Songs Without Words for Cello and Piano • Op. 4 – Concerto Fantastique, for Cello and Orchestra No. 2, in A minor • Op. 5 – Tarantella • Op. 6 – Nocturne, for Piano and Harp • Op. 7 – Wiegenlied, for 4 cellos • Op. 8 – Resignation, Sacred Song Without Words, for Cello and Organ or Piano, in E-flat major. Also for 4 cellos, in F major. • Op. 10 – Ballad, for Cello and Orchestra or Piano • Op. 13 – Impromptu • Op. 14 – Concert Mazurka • Op. 15 – Consolation, for Cello and Organ or Piano • Op. 16 – Three Easy Pieces, for Cello • Op. 20 – Two Morceaux de Salon, for Cello • Op. 21 – Elegy • Op. 22 – Three Small Pieces for a Young Cellist •
Op. 23 – String Quartet in D minor • Op. 24 – Perpetual Motion Machine for Cello and Piano • Op. 25 – Light Variations in G major on an Original Theme for Cello and Orchestra :Arrangement 1: for piano,
Breitkopf (Edition Breitkopf No. 3280) :Arrangement 2: for piano, edited by G. Bostrem (Г. Бострема) • Op. 26 – Album Leaf • Op. 27 – Three Morceaux de Salon, for Cello • Op. 28 – 40 Exercises & Technical Studies for the Cello • Op. 29 – Three Easy Pieces in the First Position • Op. 31 – Concert Waltzes for Four Cellos • Op. 32 – Funeral March • Op. 33 – Variations on a Rococo Theme for Cello and Orchestra, by Tchaikovsky; heavily edited by Fitzenhagen • Op. 34 – Fantasy on Motifs from the Opera "
The Demon" by
Anton Rubinstein • Op. 35 – Serenade, for Solo Cello, in G major • Op. 36 – Gavotte, in A major • Op. 40 – Capriccio • Op. 41 – Ave Maria for Four Cellos • Op. 42 – Gavotte No. 2 for Cello and Piano • Op. 43 – Impromptu • Op. 44 – Nocturne • Op. 45 – Minuet • Op. 59 – The Spinnerin for Four Cellos • Op. 62 – Suite for Cello, Orchestra, and Piano • Op. 63 – Concerto for Cello and Orchestra No. 3, in A minor ==Discography==