His mother was Rosalie Israelssohn while his father was Adolf Lasker, a cantor in the synagogue whose role there was to lead the liturgical prayers and chanting.
Kanyang ina ay Rosalie Israelssohn habang ang kanyang ama ay Miaka Lasker, isang kantor sa sinagog na ang mga papel doon ay na humantong sa maliturgiya panalangin at chanting.