[Vocal Range] Ingeborg Hallstein's Full Vocal Range (F3-Bb6)
6:08
Ingeborg Hallstein: Die Melodie des Lebens (Franz Grothe)
48:24
[RARE] BIRGIT NILSSON - MASTERCLASS (FULL)
15:37
What Opera's 11 Types of Female Singers Sound Like (w/examples!)
8:05
Peter Alexander & Ingeborg Hallstein sing operetta duets
1:30:12
Patti LuPone - Full Vocal Range (B♭2-D6)
7:39
RARE! Ingeborg Hallstein - I Commedianti (Mayr) - F6, F#6 high notes!
1:01:24
Ingeborg Hallstein - Da Capo - Interview with August Everding 1991
15:40