sentences:  Most notably, he wrote on Schumann's and Brahms's ciphers and music codes (the "Clara-Theme", among others), on Elgar's Enigma and on Schubert's and Schumann's pathologies.His "New Grove" articles include Schubert and Schumann work-list, "Wolf" and Wolf work-list, "Mörike", "Hanslick" and "Musical Cryptography" (also in Grove 6).He reviewed opera performance for the "New Statesman," 1976–78 and wrote record reviews for "Gramophone" 1976–78.