Bertelmann told Zimmer, “I remembered that I had refurbished my grandmother’s harmonium, which was used in her home in around 1900 to play music.

Source: https://variety.com/2023/artisans/awards/all-quiet-on-the-western-front-score-led-zeppelin-1235488886/

Sharing how Dimple enjoyed singing and playing the harmonium with her, Isha said: “She sang along and that beautiful memorable afternoon ended up with me getting a big warm hug and some sweet anecdotes from her about her life.”

Source: https://www.canindia.com/isha-talwar-enjoys-playing-harmonium-with-dimple-kapadia-on-the-sets-of-saas-bahu-aur-flamingo/