Ferdinand Beyer
Ferdinand Beyer was a German composer and Pianist. Well known in his day for his light music and piano arrangements of popular orchestral works, he is now mainly known for his book Vorschule im Klavierspiel op.101. He made Study in D famously known.
The Vorschule im Klavierspiel has been a major influence in piano pedagogy since its publication, being the foundation of elementary piano education in many countries, as is attested by the many anthologies containing parts of the Vorschule as well as the curriculum followed in many countries