Felix Mendelssohn was a German composer born in 1809 who showed early musical talent and had several accomplishments as a child, including his public debut in Berlin at age 9. He helped found the Leipzig Conservatory of Music in 1843, one of the first and leading music schools in Germany. Mendelssohn composed several famous works, including the overture to A Midsummer Night's Dream and violin concerto, before his death in 1847. He was influential in transitioning between the Classical and Romantic eras in music.