Nissan Spivak[a] (1824 – 1906, born Nissi Belzer)[b] was a Jewish cantor and composer.

[1] Born in Novaya Mysh [be], he was cantor in Bălţi (Beltsy), Bessarabia, and was generally known as ‘Nisn Beltzer’.

In his childhood he had an accident which damaged his voice but he had an extensive reputation primarily as a composer and choir conductor.

It was his vocal handicap that led him to develop original synagogue music in which the choir, instead of being merely an accompaniment or used for responses, was assigned lengthy ensembles - with solos and duets - reducing the role of the cantor.

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