J.S. Bach: Sonata for flute or recorder and harpsichord in E-flat Major (BWV 1031) was written in early 1730s and the authorship of this work is still under dispute.
Despite the fact that there are several sources indicating that the sonata indeed was written by J.S.Bach (including his son Carl Philipp Emmanuel Bach and his last pupil Christian Friedrich Penzel) some are still not convinced, since the manuscript is in his son's (C.P.E. Bach) handwriting and there's a strong notion that the Sonata was modelled from some earlier work by J.J.Quantz.

Emmanuel Pahud

Trevor Pinnock (harpsichord), 2008, Warner Classics.

1. Allegro moderato

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Emmanuel Pahud

Trevor Pinnock (harpsichord), 2008, Warner Classics.

2. Siciliana

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Emmanuel Pahud

Trevor Pinnock (harpsichord), 2008, Warner Classics.

3. Allegro

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Jean-Pierre Rampal

Trevor Pinnock (harpsichord), 1985. CBS

1. Allegro moderato, 2. Siciliana, 3. Allegro

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Bach Johann Sebastian

Johann Sebastian Bach (1685-1750) was a German composer who is regarded as one of the most important composers in the history of music. Among most of his popular works – instrumental works for violin (Sonatas and Partitas), cello Suites, keyboard works (Goldberg Variations, The Well-Tempered Clavier) numerous organ compositions (e.g. Toccata and Fugue in D minor), numerous instrumental concertos for keyboard, violin and various instruments (Brandenburg Concertos) as well as some profound vocal music works: Mass in B minor; St. Matthew Passion etc.
J.S.Bach was born in Eisenach as part of The Bach family of musicians. Orphaned at the age of 10, young Johann Sebastian lived with his oldest brother Johann Christoph for five years. During the following years he worked at several protestant churches and as a Kapellmeister at the Prince Leopold court in Köthen (1717-1723).
In 1723 he was appointed as cantor at St. Thomas, the principal Lutheran church in Leipzig (after G.P.Telemann declined to relocate to Leipzig). Even though he was mostly perceived as organist at his time, he gained honorary appointment at the court of Frederic Augustus, King of Poland in Dresden.