Rostal made the premiere recording in 1944. He went on to perform Frankel's most famous work, the Violin Concerto "in memory of 'the six million'" (a reference to the Jews murdered during the Holocaust), commissioned for the 1951 Festival of Britain, and was the soloist in the Viola Concerto for BBC radio broadcasts in 1970 and 1972. The core of Frankel's output are the eight symphonies (composed between 1958 and 1971) and the five string quartets (composed between 1945 and 1965). His friend Hans Keller was a champion of his concert music and did much to promote its performance at home and abroad.