This research has had a significant impact on raising the profile of the Polish born composer Mieczysław Weinberg. Prior to Professor Fanning’s work little was known in the West about this composer’s extensive musical output and his music was rarely performed. Professor Fanning’s research has enhanced public and professional awareness of the music of Weinberg, impacting on musicians, record companies, arts venues and audiences in Britain and Europe. It has led to the first ever performance cycle of his 17 string quartets as well as world premieres of his Requiem and his comic opera Lady Magnesia, alongside other performances and numerous recordings. The research has established the University of Manchester as the main repository of information and source material concerning Weinberg in the Western world.