Composers: Medieval, Baroque, Classical and Romantic Eras

I built organs for churches and wrote organ Toccatas and Fugues and gave organ concerts.

I wrote over 100 symphonies. I gave music lessons to Ludwig van Beethoven and Franz Schubert. They called me Papa.

I wrote the music for "Hark the Herald Angels Sing."

I lived in the Baroque period and wrote the concerto for violin named, "The Four Seasons". 

Mozart heard me play piano and said, "Watch out for this one he will do great things." Who am I? 

Writing music was easy for me. My sister and I played our music for royalty in Europe, who am I?

In 1687, I was the busiest and most important composer of my time in England.

I composed my oratorio, "The Messiah."

My piano playing was said to be better than my younger brother. I wrote over 500 pieces of music. Who am I?

I loved Bach's music and got it published. My older sister plays piano much better than me.