Wolfgang Amadeus Mozart was an Austrian composer and musician who lived in the 18th century. He is widely regarded as one of the greatest composers of all time and his influence on Western music is profound. He composed over 600 works, including symphonies, operas, concertos, chamber music, and religious music. Mozart's most famous works include the operas The Marriage of Figaro and Don Giovanni, the piano concertos No. 21 and No. 23, and the symphonies No. 40 and No. 41.