| Composition | Correct Principles of Classical Singing (Heinrich, Max) for voice | 
| Contributors | — | 
| Publisher | Lothrop | 
| Languages | — | 
| License | Public Domain | 
| Published | 1910 | 
| Edition | — | 
| Parts? | No | 
| Selections? | No | 
| Vocal score? | No | 
| Description | IMSLP filename | Pages | 
|---|---|---|
| Complete Book | PMLP579287-MHeinrich_Correct_Principles_of_Classical_Singing.pdf | — | 
©2025 David P. Anderson