C.P.E. Bach: Sonata for flute and harpsichord in G minor (Bwv 1020, H 542.5) was composed in 1734 when Carl Philipp Emanuel just started his studies at the University in Frankfurt (Musikalische Akademie).
The authorship of this sonata is still unclear since various sources claim that this work was originally catalogued as a violin sonata (BWV 1020) by Johann Sebastian Bach. Most likely because the compositional style of young Carl Philipp Emanuel had a distinctive influence of his father, J.S. Bach at that time.

The sonata consists of three movements: an energetic Allegro, featuring fast-paced passages, a slow Adagio in B-flat major, and final Allegro (in G minor), returning to the lively character of the opening movement.
It's important to note that the attribution and catalogue numbers for this sonata may vary depending on various researchers and editors.

Barthold Kuijken

Bob Van Asperen (harpsichord), 1993, Sony Classical

1. Allegro

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Barthold Kuijken

Bob Van Asperen (harpsichord), 1993, Sony Classical

2. Adagio

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Barthold Kuijken

Bob Van Asperen (harpsichord), 1993, Sony Classical

3. Allegro

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Bach Carl Philipp Emanuel

Carl Philipp Emanuel Bach (1714-1788) was a German composer, son of J.S.Bach and godson of G.P.Telemann. C.P.E. Bach’s “sensitive style” (empfindsamer Still) marked a transition between baroque and classical style, applying principles of rhetoric and drama to musical structures. C.P.E. Bach was known as “Berlin Bach” to differenced himself from his brother J.C.Bach who was known as “London Bach”. Besides composing, C.P.E.Bach wrote “Essay on the true art of playing keyboard instruments”, thus greatly influencing upbringing of the greatest classical composers: Haydn, Mozart, and Beethoven.