Five rebuilds and 21 new organs can be assigned to Trost. Amongst others, he built the organ of the evangelical church in
Waltershausen, the largest baroque organ in
Thuringia. Another of his important works is that in the chapel of the , which was much admired by
Franz Liszt. Bach's pupil
Johann Ludwig Krebs was organist of this organ from 1756 to 1780. A later organist at Altenburg, praised the organ in 1880 in his assessment: While
Gottfried Silbermann built fairly conventional organs following five basic standardised patterns, Trost was more experimental. He frequently tried new ideas, and favoured colour stops. His
flute choirs were particularly strong, reaching up into the one-foot pitch range. On the other hand, he used
mixtures only sparingly. Each division had only one mixture containing thirds, and he did not use the Scharf or Cymbale stops. He used
reed pipes sparingly, mostly confined to the pedal, but he appreciated "toy" stops and effects. Trost divided his stops between Hauptwerk (Great), Brustwerk, and Pedal, sometimes with an Oberwerk. This was the only arrangement he ever used. Trost was a poor businessman. He often missed deadlines and exceeded agreed costs, causing disagreement with his employers. It is known that he worked on the Waltershausen organ from 1722 to 1730 despite having agreed to complete the work in two and a half years. The city councillor Marci was driven to poetry about the "dissolute organ-builder Trost", whose name translates as "comfort" or "consolation": {{Verse translation|lang=de|Vor gethan und nach bedacht, hat manchen, und auch Uns bey diesem gantzen Kirch-Bau, in viel Leid und Unglück bracht. Der Orgelmacher heisst zwahr Trost, doch giebt Er uns gar schlechten Trost, Ach weren wir vom Trost erlost.|From start to finish many men, Have suffered building organs, then We too have joined their ranks, with Trost: "Consolation" is his name's translation, But he gives us scant elation, "No-Trost!" is what we hope for most. Gottfried Silbermann was asked for an expert opinion of the Altenburg organ. Despite his appreciation of the organ, Silbermann made various suggestions for improvements, "concerning which H. Trost went to much effort, sparing himself no work, but which can have brought him little profit". After its completion in 1739 this organ rapidly became a magnet for organists and a popular concert instrument. == Organs on which Trost worked ==