He was born in the city of Curicó, in the Maule region, in central Chile, to José Raúl Alarcón and Elsa Eliana Rojas Aliste on the 15th of October, 1945.

He has two children: Francisca Olivia Florcita de la Paz, also a musician, with a degree in music and a drummer for Golem; and Lucas Merlín Alarcón Campos.

[7] He worked in the permanent orchestra of the Saturday television program Sábados Gigantes, conducted by Mario Kreutzberger, Don Francisco.

He created a character to overcome his obstacles in his relationship with the opposite sex and to make room for his artistic expression: "Florcita Motuda", which, according to Alarcón, reflects his blossoming to life.

[9] He would represent Chile again in the OTI competition in 1981, with the song Si hoy tenemos que cantar a tanta gente, pensémoslo, with which he obtained fifth place.

Alarcón attended his first day as a legislator in the Chilean Congress dressed in his white cape with moons and black stars, in addition to the antennas on his head.

The musician used his "gala" suit to attend the Plenary of Congress and the start of the new legislature, where his wardrobe did not go unnoticed by the cameras and television.