It is by Johann S Bach!. It was composed for the organ.
There are no music terms used in the Little Fugue in g minor (BWV 578).
It's in the form of a FUGUE.
A fugue is a musical form. An opus is a musical composition. Therefore a fugue is not an opus, nor is an opus a fugue. A composer may compose a fugue and give it an opus number. In that case, a specific fugue is identified by a specific opus number in its composer's catalogue: 'Fugue in G minor for organ, opus 99, by Franz Schnitzelgruber.'
The "Toccata and Fugue in D minor" is probably one of Johann Sebastian Bach's most easily identifiable pieces. No self respecting 1930's horror movie would be complete without at least a few bars of it somewhere during the movie.
monophonic
This composition is in fugue form. It has a principal theme called 'subject' which recurs in multiple voices. It is composed according to the element of counterpoint.
Johann Sebastian Bach wrote Organ Fugue in G minor (Little Fugue) in 1709
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Bach fugue in g minor
Jesu, Joy Of Man's Desiring, 'Air On A G String', 'Toccata And Fugue In D Minor
Well... He was able to play the organ extremely well and has written some fugues that no one is able to play today. His "Little Fugue in G minor" was fairly easy to him; today, only one person in the world is able to play it. He also was a good composer; nothing compared to Beethoven or Mozart though.