Three early 20th century recordings of Kol Nidre from the Library of Congress

From 1912, an instrumental version done by famed American violinist and conductor Maximilian Pilzer, with the piano portions by "Miss D. Pilzer," presumably his sister. 

From 1913, by the legendary chazan Yossele Rosenblatt, accompanied by organ.

Also from Rosenblatt, a "new" version in 1923, accompanied by an ensemble. His voice changed a lot in those ten years! He shows a greater vocal range and also sings with the instruments providing a counterpoint.

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