Catalogued in RISM as “La Semiramide–B♭ major (Excerpts, Arrangement); Manuscript copy; I-Mc Noseda I.88.2” by Anonymus. RISM 850729708
Same music
The aria 'Fiumicel che s'ode appena' (incipit 1.2.1) matches, with the same words, a copy of the aria under Millico's name (incipit 1.1.1); it is his aria in this La Semiramide, one of several settings.
Attributed copies compared (1 of 1 encoded incipit match):
1.2.1 Aria Larghetto grazioso · S · “Fiumicel che s'ode appena” · 8 of 8 pitches agree
''8.D6E/gG4F{8ED}4DD/{8.D6E}4C2-8.6''DE/q8G4F8{ED}4DD/8.6{DE}4C2-/2.CCatalogue 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.