- On April 27th, Alessandro Gnattali (1876-1942)  and Adelia Fossati (1880- 1954) got married in Porto Alegre.
- Born in Rio de Janeiro, the famous lyric singer Bidu Sayão (Balduina de Moreira Sayão); Radamés was honored to tour with her to the South of Brazil as a pianist, in the thirties.
- Launched in Brazil of the first comic for kids, O Tico-Tico.
- For the first time in Rio de Janeiro, the classic Brazilian soccer match (so called the “grandpa classic”) between two of the most traditional soccer teams in the city: Fluminense and Botafogo (Radamés’ favorite soccer team), which victory has gone to the opponent for 6 x 0.
-  Upon arrival in Brazil , coming from Italy, Alessandro decided to adopt the name of Alexandre. There is no news whether he had naturalized his nationality into Brazilian.
-  “Bidu was great, she got it all right and quickly, we didn’t have to rehearse too much”, used to say Radamés.
- Born Radamés Gnattali, on January 27th, in Porto Alegre (Capital of Rio Grande do Sul State, RS), exactly in the same day and month of the 150 anniversary of Mozart
- Born in Queluz (São Paulo, SP, State) the conductor and arranger Lyrio Panicalli which formed, together with Leo Peracchi and Radamés, the frontline of the great maestros of the National Radio, for over a decade, during the forties and the fifties.
- Between the 15th and the 20th of April, takes place in Rio de Janeiro, the First Brazilian Workers’ Congress, the reunion of Union representatives from all over the country.
- In Paris, Santos Dumont performs his first public flight with his 14 Bis, a vehicle heavier than the air and a gasoline-powered car.
- Born in Rio de Janeiro City, (capital of Rio de Janeiro ,RJ, State), the composer and producer Carlos Alberto Ferreira Braga, famous Braguinha, also known as João de Barro.
- In the United States, people experience the first radio transmissions.
-  Braguinha (or João de Barro) was director and artistic director of Continental Recording Company, launching in the forties, a series of stories for children inspired in the universal literature, where he created the songs and soundtrack with orchestrations by Radamés. Immune to time travel, the collection enter the 21st century remastered in CD by Warner Records in 2001.
- Born in Porto Alegre (Rio Grande do Sul, RS, State), on February 13th, Ernani Gnattali , Radamés’ brother.
Radamés and Ernani.
- The Escola de Belas Artes (Fine Arts), was founded in Porto Alegre, where Radamés concluded his piano studies, in 1924.
- Born in Porto Alegre (Rio Grande do Sul, RS, State), the violin player and composer Luís Cosme , part of the Henrique Oswald Quartet, in the mid-twenties, in Porto Alegre, Capital of Rio Grande do Sul State, with whom Radamés was the viola player.
- Born in Rio de Janeiro (Rio de Janeiro, RJ, State), the singer and radio man Admiral (Henrique Foréis Domingues), known as “the major patent in the radio”, who strengthened the top musical producers at the National Radio, during the forties and the fifties, with Haroldo Barbosa, José Mauro, Paulo Tapajós and Radamés.
- Born in Rio de Janeiro (Rio de Janeiro, RJ, State) the percussionist Luciano Perrone , first Brazilian instrumentalist to systemize and transpose the rythm of the Samba Schools into drums. Radamés has dedicated to him the Brasiliana Nº2 (Samba in three movements), among others.
- The singer, composer and popular poet Catulo da Paixão Cearense performs a controversial audition of popular music, at the National Institute of Music, in Rio de Janeiro, supported by maestro Alberto Nepomuceno, criticized by the more conservative wing of musician community.
- San Diego (California/EUA) presented the first Broadcast from a Radio Station in the United States.
- The Brazilian Confederation of Brazilian Workers, sympathizers with the anarchism  breaks out further to the First Workers Congress, in 1906.
-  Ernani Gnattali (1908–1968) studied piano with his mother very early. He’s fallen in love with the violin though, and has dedicated to his cousin Olga Fossati’s instrument. His musician brothers used to say that he played very well, but he never became a real professional instrumentist. He worked as a copyist at the National Radio for 20 years but in 1960 he moved to a Federal Public Administration career.
-  Luiz Cosme was a great Radamés’ youth friend. Read more: http://www.abmusica.org.br/academico/luiz-cosme/
-  Luciano Perrone (Rio de Janeiro, 1908-2001) and Radamés Gnattali have met in 1929, at a resort area in Lambari, State of Minas Gerais (MG). His comprehension and domain of Brazilian rhythms, further to his technique were his major characteristic that has influenced and inspired Radamés’ orchestration work. Their mutual collaboration was the tonic of their partnership for a life, at the National Radio, the Continental Records, the Radamés Gnattali Quintet and Sextet.
-  Radamés used to say he had been grown up among the ideas and concepts of anarchism, transmitted by his father and grandfather, as well as for Family friends, such as the shoemaker Caetano dal Fiume.
- Maria Weingärtner Fossati (1851-1910), Radamés’ gramma from his mother’s side dies in Porto Alegre, RS, when she was 59 years old. She was the daughter of German immigrants, and a cousin of the famous painter, drawer and printmaker Pedro Weingärtner .
- Radamés started his piano studies when he was 3 or 4 years old, with his mother Adélia, as per his own briefing at the Image and Sound Museum (RJ), during the Distinguished Personalities Cycle, on August 28th, 1985.
Carlo Fossati and Maria Weingärner Fossati, Radamés ‘maternal grandparents, with their children, in 1902. Standing, from left to right, Adélia (Radamés’ mother), Camillo, Cesar, Emília, Vittorio, Arthur, Pascoal and Frederica. Seated, Paulina, Maria (mother), Nina (Ítala), Carlito (Carlo, son), Carlo (father) and Virgílio. Everyone studied music. Women, piano; men, piano and violin or cello. Vittorio, in addition to the piano, played the flute very well. 
- Ernesto Nazareth (1863-1934) composes the Brazilian-tango Odeon, for piano solo.
- On November 23rd the Revolta da Chibata  breaks out in Rio de Janeiro.
-  Pedro Weingärtner (Porto Alegre RS 1853 – 1929). Painter, printmaker, lithographer, drawer, and professor. Read more.
-  Photo restored by Jussara Gomes Gruber, 2008 (Aída Gnattali’s private collection)
-  Leaded by João Candido, the Revolta da Chibata was a rebellion inspired in the chibata punishment, which means blowing the body with a cane. Read more.