J. C. Bach - Keyboard Sonata Opus 5 No. 2

Johann Christian Bach (1735 - 1782) was the last child born to Johann Sebastian Bach. He studied with his father until his father's death in 1750. He then studied with his older brother C.P.E. Bach who was at the time considered one of the most influential composers in Europe. 

J.C. Bach spent some time in Italy studying and playing the organ. He went to England for the premiere of three of his operas there and secured his reputation so well he became Musicmaster to the Queen and spent the rest of his life in London. He is known as the English or London Bach because of this. He composed operas, orchestral works, concertos and works for keyboard. When Mozart was still a child he met J.C. Bach who influenced Mozart's concerto style.

He wrote many sonatas for keyboard, and the sonata Opus 5 Number 2 is in D major. It is written in the galant style,  simpler music in the style of melody with accompaniment with less ornamentation and counterpoint.  In Bach's day the piano had not yet taken over from the harpsichord so his sonatas can be played on either instrument, and have even been played on the clavichord.  the sonata is in three movements.