His orchestral music includes around 30 symphonies and 12 virtuoso cello concertos. His compositions include nineteen violin concertos and forty operas. Orchestras also play with instrumental soloists in concertos. C. P. E. Bach wrote five flute concertos and two oboe concertos. Mozart wrote five violin concertos, all in 1775. A number of violin, oboe, and flute concertos have been reconstructed from these. Some of his clarinet and viola concertos are particularly admired. Mozart's five violin concertos were written in Salzburg around 1775. She also learned 28 violin concertos, chamber works, and assorted showpieces. It is the first of Bach's harpsichord concertos. Saint-Georges composed 14 violin concertos. In 2009, Jansen released her recording of the Beethoven and Britten Violin Concertos. He focused instead on his career as a piano soloist and writer of concertos. The solo parts never have a virtuoso style comparable to other solo concertos. Schumann had worked on several piano concertos earlier.