“Garua” is a 1943 tango by Anibal Troilo and Enrique Cadícamo. It was recorded by Troilo with Francisco Fiorentino for the label RCA Victor on august 4, 1943. Two days later, Pedro Laurenz recorded his own version with Alberto Podestá under the label Odeon.
“Garua” is the second of 3 tangos composed by Anibal Troilo with the lyrics of Enrique Cadicamo, the other two other being “Pa’ que bailen los muchachos” (1942) and “Naipe” (1944). According to Cadícamo, Troilo presented the music to him one night at the Tibidabo and asked if he could write the lyrics. As he walked home that night there was a very light rain or drizzle falling over him and this is where he conceived the first verses of his famous tango. 
¡Garúa! Solo y triste por la acera, va este corazón transido con tristeza de tapera.
Drizzle! Sad and lonely by the sidewalk, goes this hear striken with the sadness of an abandoned house.
Garua is a lunfardo term of Quechua origin which translates to “drizzle”.  The rains is a recurrent theme in tango and has been evoked directly or indirectly in many other pieces such as “El café de Los Angelitos”, “El ultimo café”, “Charlemos”, “Tarde gris”, and “La noche que te fuiste” as a symbol of loneliness.
It wasn’t long after that night when he walked back home under the drizzele that Cadícamo came back to el Tibidabo with “Garua” and just a few days later Troilo was rehearsing with Francisco Fiorentino.
The 1953 recording by Troilo and Fiorentino was followed by another one in 1962 by Troilo and Roberto Goyeneche who recorded two other versions with Raul Garello and Astor Piazzolla. Other well known interpretations of “Garua” include those of Hugo del Carril and Adriana Varela.
 Del Priore, Oscar, and Irene Amachástegui. Cien tangos fundamentales. Buenos Aires: Aguilar, 1998. Print.
 Garúa. Tangos al Bardo, 2013. Online. http://tangosalbardo.blogspot.com.ar/2013/07/garua.html
 El tango y la lluvia. El Litoral, 2011. Online. http://www.ellitoral.com/index.php/diarios/2011/08/20/escenariosysociedad/SOCI-02.html
 Diccionario lunfardo. Todotango. Online. http://www.todotango.com/comunidad/lunfardo/?i=G&s=all