The article is focused on the involvement of Kraków’s lodge B’nei B’rith (Solidarity) in local Jewish musical life in the interwar period. On the basis of information contained in documents preserved in State Archive in Kraków we may conclude that the activity of the most outstanding Jewish musical institutions would not have been possible without financial support of Solidarity. However, it seems to be the expectation of the lodge that all musicians and groups supported by B’nei B’rith had to derive from the environment of the progressive Jews and were also involved in the promotion of the new ‘Hebrew music’. There are no doubts that both of these features of the lodge Solidarity’s activity had a profound influence on the shape of Jewish musical life in the interwar Kraków