Diccionario bibliográfico de la müsica argentina y de la música en la Argentina

[...] he also relied on other books and periodical literature to provide birth and death dates of all the persons listed, and also to trace pseudonyms, given the cultural propensity to nickname musicians. [...] Francisco Canaro (1888-1964), an iconic figure in the history of tango with allegedly 3,700 recordings to his credit, also can be accessed by "Pirincho," his most popular appellation, as well as "El Kaiser"; an entry on "Ronaca," a nickname listed under "Canaro, Francisco," however, was-no doubt unintentionally-omitted (pp.16, 114, 280, 399).