Catalogued in RISM as “Norma (Excerpts, Arrangement); Manuscript copy; D-GOl Mus. 4° 53a/3” by Anonymus. RISM 250015901
Same musicWork identified onlyTitle already names the work
The horn melody is a tune from Norma, a sixth apart from another arrangement; the title already names the opera, and the record says the potpourri's arranger is unknown.
Catalogue flags:
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Andante · cor a chiavi · 13 of 13 pitches agree
4'F{8B''C}4DF/F{8.6ED}2C/4C{8.6'xB''C}4DE/E{8.6DC}2'B/4''D{8.G6A}4B'''D/D{8.C''6B}2A/4A{8.A6A}4B'''C/C{8.''B6A}2G/Catalogue data and incipits come from RISM (Répertoire International des Sources Musicales), CC BY 4.0. Incipits are rendered with Verovio. Source and data: https://github.com/aaymeloglu/rism-attributions.