He lived in Przemyśl, head of the music section of the Jewish Society of Music and Theatre Lovers ‘Yuval’, which operated in that city in 1919–37 (it also had a theatrical section). The music section ran a music school for children and teenagers, whereas the Society’s orchestra and choir gave public concerts and recitals.
In December 1924, the ‘Yuval’ hosted a conference of Jewish choral and music societies. On that occasion an evening of Jewish songs was presented, with Neger as master of ceremonies. Neger composed, among others, Die Klage for violin and piano (Op. 17, published in Vienna) as well as Pictures from the Ghetto, published as a supplement to Nowości Muzyczne (1912 No. 12). In the commentary to the latter work, we read:
This is a musical illustration of a Jewish funeral with all the traditions accompanying this sad rite. There are the wailings of mourners, the striking of the 'Box' by the Shames, and seven sforzandi representing the seven days of atonement after the funeral. All verses of the illustration are maintained in minor tonality, as it corresponds to the given mood of the moment. The whole has an original structure and provides a vivid characterization of an episode from the life of the Jewish people.
as the Polish distributor of ‘a world-famous music instruments factory’ (Promotional Catalogue, Przemyśl, 1929), with which he supplied army bands, civilians, and soloists. He also sold best-quality drumskins, reeds, Turkish cymbals, sheet music, and so-called ‘marching books’ for bands. Neger was the editor of Józef Koffler’s journal Orkiestra, with editorial office at 11 Smolki Street.