Johann Friedrich Schulze was born on January 27, 1793 as the son of organ builder Johann Andreas Schulze (1740-1810). After the death of his father he worked at Ehle in Stadtilm. In 1815 he started an independent company in Milbitz. Ten years later it moved to Paulinzella. From 1833 the company was located in Mühlhausen for some time. Schulze died in Paulinzella on January 9, 1858. The company was continued by his sons Edmund (1824-1878), Eduard (1830-1880) and Herward (1830-1908). Johann Friedrich built 117 organs between 1815 and 1850, mostly in Germany, but also in Denmark, Latvia and the USA. His son Heinrich Edmund Schulze (1824-1878) became a co-partner and continued the company in 1858. Johann Friedrich was the fourth generation of a well-known organ building family, but he was the most important. He had a lot of contact with Johann Gottlob Töpfer, who had many new ideas about organ building. Schulze therefore applied many innovations. The largest organ he built was in Lübeck in the Marienkirche, but it was lost during the Second World War.
| Neugebaute Orgeln |
| Jahr | Ortsname / Gebäude | Opus |
| 1815 | Horba (Kreis Rudolstadt) | |
| 1816 | Allendorf (Kreis Rudolstadt) | |
| 1821 | Rottorf (Kreis Weimar) | |
| 1825 | Rettwitz (Kreis Weimar) | |
| 1826 | Zimmern (Kreis Bad Langensalza) | |
| 1827 | Rastenberg (Kreis Soemmerda) | |
| 1829 | Schwarza (Kreis Weimar) | |
| 1829-1830 | Windeberg (Kreis Mühlhausen) | |
| 1830 | Nägelstedt (Kreis Bad Langensalza) | |
| 1831-1832 | Gräfinau-Angst (Kreis Ilmenau) | |
| 1833 | Hopfgarten (Kreis Weimar) | |
| 1835 | Sargstedt (Kreis Halberstadt) | |
| 1837 | Großrettbach (Kreis Gotha) | |
| 1838 | Görmar (Kreis Mühlhausen) | |
| 1839 | Trzebiatow (Treptow, Polen) | |
| 1840 | Eledena (Kreis Ludwigslust) | |
| 1840 | Langewiesen (Kreis Ilmenau) | |
| 1840 | Warz (Kreis Gotha) | |
| 1843 | Heringen (Kreis Nordhausen) | |
| 1843-1844 | Langula (Kreis Mühlhaursen) | |
| 1846 | Elberfeld, Alte Reformierte Kirche (verwoest in 1943) | |
| 1847 | Kenz (Kreis Ribnitz-Darmgarten, Vorpommern) | |
| 1847 | Iserlohn (Westfalen), Reformierte Kirche | |
| 1848 | Markneukirchen-Vogtland (Sachsen) | |
| 1848 | Riga (Letland), Reformierte Kirche | |
| voor 1850 | Nowe Warpno (Neuwarp, Polen) | |
| voor 1850 | Wolin (Wollin, Polen) | |
| voor 1850 | Glewin (Kreis Grimmen) | |
| voor 1850 | Legi (Langen, Polen) | |
| 1850 | Kiliansroda (Kreis Weimar) | |
| 1850 | Rottenbach (Kreis Rudolstadt) | |
| 1852 | Meuselbach (Kreis Neuhaus a. Rennw.) | |
| 1851-1854 | Lübeck, Marienkirche (verwoest in 1944) | |
| 1854 | Illfeld (Kreis Nordhausen), tegenwoording in Elbingerode (Kreis Osterode) | |
| 1856 | Wersabe (bij Bremerhaven) | |
| 1856 | Molschleben (Kreis Gotha) | |
| 1856 | Bothenheilingen (Kreis Bad Langensalza) | |
| 1857 | Schweintiz (Kreis Poessneck) | |
| 1857 | Linderbach (Kreis Erfurt) | |
| 1858 | Elberfeld, Neue Reformierte Kirche (gesloopt) | |
| 1865 | Solingen, Stadtkirche | |
| 1866 | Düsseldorf, Tonhalle | |
