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For an overview of the membership plan see IMSLP:Membership Q&A.
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Free public domain sheet music from IMSLP / Petrucci Music Library
Edmund Angerer (24 May 1740 — 7 August 1794)
Apparently according to RISM 454016812
a mass of his was listed as Joseph Haydn's Hob XXII:6 for some while (or did Haydn incorporate part of Angerer's mass into his own? Not sure I do understand after all. - Schissel)
Compositions by: Angerer, Edmund
The following 2 pages are in this category, out of 2 total.