Johann Fischer was a German violinist, keyboardist and composer of the baroque era. His name is not to be confused with another composer named Johann Fischer, born in Lübeck and listed by Johannes Moller in Cimbria literata (v. I, p. 176). He is mentioned as a good clavier and violin player, who is said to have especially loved the return of the strings and, in this way, he mainly composed for the violin and also the viola, which he sought to write for in his overtures. In any case, his works are of historical interest since they are likely to betray the influence of the then French instrumental music.
Fischer's compositions are similar to those by Johann Sigismund Kusser, as his traditional chamber music suggests. He wrote various collections of songs, the most important being a collection of fifty French songs and another collection of madrigals and Lieder. His melodies are original and his harmonies and rhythms varied. In his work, scordatura is often required for the viola. He also wrote instrumental works. Johann Mattheson writes that Fischer's music was highly praised and frequently played, although his extensive work on church music, consisting of numerous cantatas and motets, is still little explored. His works are listed by Ernst Ludwig Gerber in his Lexikon der Tonkünstler (v. II, p. 133).