Born in Hannover, Hundoegger grew up in a Bildungsbürgertum (educated middle class) influenced parental home; her father was chief physician of the municipal hospital of Hanover.
The impressions and experiences of the one month in which I felt part of this great community there have marked a turning point in my life and my professional activity.
It was not at all a question of personal artistic achievement, but of the ability to adapt to a given subject and class level and to solve a task with pedagogical understanding.
As with John Curwen, the founder of the tonic-sol-fa system, Hundoegger's lessons focused on singing tone sequences and songs with the help of solmisation syllables and hand signals.
In 1923, four years before her death, she was able to state that the "tonic-do cause [...] had grown from a small seed, without any loud propaganda, with quiet continuity into a strong stem".