Cello inexpensive wood that has been blackened or "ebonized" to look like ebony, which is much harder and more expensive. Ebonised parts such as tuning pegs may crack or split, and the black surface of the fingerboard will eventually wear down to reveal the lighter wood underneath. Historically, cello strings had cores made out of catgut, which, despite its name is made from sheep or goat intestines which are dried out. Most modern strings used in the 2010s are wound with metallic materials like aluminum, titanium and chromium. Cellists may mix different types of strings on their instruments. The pitches of
Concerto for Piano, Violin and Strings (Mendelssohn) Concerto for Piano, Violin and Strings (Mendelssohn) The Concerto for Piano, Violin, and Strings in D minor, MWV O4, also known as the Double Concerto in D minor, was written in 1823 by Felix Mendelssohn when he was 14 years old. This piece is Mendelssohn's fourth work for a solo instrument with orchestral accompaniment, preceded by a Largo and Allegro in D minor for Piano and Strings MWV O1, the Piano Concerto in A Minor MWV O2, and the Violin Concerto in D minor MWV O3. Mendelssohn composed the work to be performed for a private concert on May 25,