found: Puccia, E. El Buenos Aires de Angel G. Villoldo, 1976:p. 21 (Angel Gregorio Villoldo, b. 1869) p. 307 (d. 10-14-1919)
found: Internet, URL: http://www.todotango.com, Dec. 5, 2000:main menu (b. Feb. 16, 1861; d. Oct. 14, 1919; Musician and poet)
found: Villoldo, Angel Gregorio. Vrai tango argentin, 1913(A.G. Villoldo)
found: LC database, Jan. 29, 2008(hdg.: Villoldo, A. G.)
found: Wikipedia, September 3, 2021(Ángel Gregorio Villoldo Arroyo; Argentine musician and one of the pioneers of tango music; lyricist, composer, and one of the major singers of the era; also known by the pseudonyms A. Gregorio, Fray Pimiento, Gregorio Giménez, Angel Arroyo, and Mario Reguero)
notfound: Intl. ww in music;ASCAP biog. dict;New Grove.
