: A detailed technical analysis of the duet, including instrumentation and harmonic structure, is available from Wright Stuff Music.
If you are distributing a to students, keep these pedagogical notes in mind:
A: Yes. "Pa-pa-pa" is the colloquial name for the duet. If you search for "Papageno Papagena Duet PDF," you will find it.
These cost around $15–25 and include full context, translations, and rehearsal-friendly layouts. But for practice and learning? A free public domain PDF from IMSLP is perfectly fine.