Fortepiano by Joseph Brodmann

1827, Vienna

Compass CC–g4, 5 pedals (one string, bassoon, single and double moderator, dampers)

The instrument is a wonderful example of the fortepianos built by one of the most famous Viennese makers of the first half of the 19th century. Joseph Brodmann received many important privileges for the improvements he patented, including the triple laminated soundboard featured in this instrument. Brodman’s most important pupil was I. Bösendorfer who worked for him and took over the workshop in 1828. He first signed his instruments with Ignaz Bösendorfer, formerly Brodmann. Later on, he discontinued this addendum.

Tuning pitch
430 Hz

Viennese action

Five pedals
one string, bassoon, single and double moderator, dampers

3 strings per key throughout
String diameters are very precisely written on the soundboard and therefore were used as an indication for the restringing of the instrument.

Mahogany wood

Lower keys: ivory
Upper keys: ebony

Measurements of the instrument
Width including trims: 995 mm
Length including trims: 2140 mm

During the restauration at the Laboratorio di restauro del fortepiano di Firenze in 2019, all parts were disassembled after being measured and cataloged.

In piano restoration it is only rarely possible to keep the original leather because it is often too worn out. The original leather of the Brodmann hammers was in very good condition and where possible it has not been replaced. This is one of the main reason for the round and full sound of the piano.

The regulation of the action was studied to reach the best dynamic to favour the musician’s touch.
After restauration, the piano has kept all features belonging to Brodmann’s manufacturing and is a very good example of what was offered in Vienna at that time.