Wow! How did you calculate that figure roughly?
I know these kind of things
Hi stevensk,
some source, nevertheless, wouldn't be bad to get, here, I think.
Let's take 10000 (ten thousand) composers. Each of them has to have composed no less than 100 pieces in average, which must be known, which must be -subjectively- worthy, and which must have made it into "repertoire" and consciousness of -allowedly, I must confess- a wide variety of pianists and which must be able to be approved by investigation, at least approximately...
Let's not forget that we would have to "delete" many
redundant ones, (
as foreposters already pointed out), until only ONE of the specimens prevails......(e.g.: sets of the same pieces that were
reported / recorded by a quantity of keyboard-players, or more than once, or are referred / reported to have been
played by one or a
quantity of players more than once ). That's even relevant to sources like arkivmusic.com, if we dare to add them up, at first.)
Our thoughts must approach, then, the
IMSLP-resource. And our brain COULD count the ones collected there, as an addition to the ones in the already mentioned resources.
But we have, then, to watch out for copyright issues (newer music shouldn't be on IMSLP), and for the
"Anonymous" pieces and collections, which- up to now- nobody can attribute to a specific composer. So we have to
subtract:
a ) the redundant playings / recordings, after THOROUGH research in the sources mentioned,
b ) the "Anonymous" works,
c ) Collections, which one likes - and others would estimate as "crap".
On the other hand, I myself have more than 800 volumes and / or single editions of piano-stuff here at home, and some parts of my "collection" weren't even investigated by me, they are still bound together, in the cellar, since I have inherited them.
This way, @stevensk, you may be right. But to call some of them "repertoire, belonging to the imprtant epoques", won't make it, I think, since part of that stuff consists in e.g. volumes, whose contents only were played in families to delight the mother or father, or sth. like that. E.g.: "Musikalische Edelsteine", many volumes.
Cordially, 8_octaves!