In addition to all the publishing activities they also acted as verification service. Apparently it was common for Conductors to modify compositions which over time drifted from the original.
My understanding was that the family collection of sheet music stretched back in time so they could verify the modifications.
The building had about 12,0000 square feet stacked floor to ceiling sheet music.
Much of the sheet music ended up at the library of congress. I can believe things could be both archived and lost.
Indeed, I'm a jazz musician. There's huge amounts of material created for the so called "big band" that exists only in someone's basement, or is learned about by word of mouth.
https://imslp.org/wiki/Broude_Brothers
In addition to all the publishing activities they also acted as verification service. Apparently it was common for Conductors to modify compositions which over time drifted from the original.
My understanding was that the family collection of sheet music stretched back in time so they could verify the modifications.
The building had about 12,0000 square feet stacked floor to ceiling sheet music.
Much of the sheet music ended up at the library of congress. I can believe things could be both archived and lost.