Busoni's international reputation rose swiftly, and he frequently performed in Berlin and other European capitals and regional centres (including Manchester, Birmingham, Marseilles, Florence, and many German and Austrian cities) throughout this period, as well as returning to America for four visits between 1904 and 1915. This journeying life led van Dieren to call him "a musical Ishmael" (after the Biblical wanderer). The musicologist Antony Beaumont considers Busoni's six Liszt recitals in Berlin of 1911 as the climax of his pre-war career as a pianist.