Although his first musical experience occurred when he was 5 years old with a tambor and clarion group, he began to study trumpet under the maestro Manuel Morales at the Fray Miguel de Bolonia school in Chapala, Jalisco (Mexico) when he was 10. It was here that trumpet playing would become his profession. This occurred just four years later, since he began playing with the band 16 de Junio, and then in Guadalajara, Jalisco, with the Municipal Band of Music and the State Band of Jalisco.
In 1978 he went to La Paz, Baja California (Mexico) to work with the band América and one year later moved definitively to Mexico City, where he worked in the Harry Lemon Show. Nevertheless he would leave this show to continue his studies at the Higher Studies Institute of the Musicians' Union in Mexico City, where he received classes from the maestros César Molina and Pepe Villar. While there, he would have the opportunity to rehearse with the Víctor Guzmán Orchestra, providing him the opportunity to be heard by Chucho Pinto y Los Kassino as well as by the Pérez Prado Orchestra resulting in his being hired by them shortly thereafter.
This was the starting point of his rapidly rising career. From 1981 on, Isidro Martinez began to collaborate with great musicians in all styles and genres, participating in international tours, recordings of television, cinema, and working for record companies under producers such as Emilio Estefan. Here he achieved an illustrious career long establishing him as one of the most important and referential Mexican trumpet players.
In the year 2003 he founded the brass quintet Pentabrass, which he conducts and plays in. He has also been Alejandro Fernandez’ featured trumpet player since 2005.
Collaborations with other singers: Plácido Domingo, Rocío Dúrcal, Miguel Bosé, David Bustamante, Estopa, Armando Manzanero, Juan Gabriel, Lila Deneken, Amanda Miguel, José Luis Rodríguez ‘El Puma’, Kalimba, Tania Libertad, Ricardo Montaner, Alejandra Guzmán, Carlos Rivera, Lila Downs, José José, María Conchita Alonso, Lupita D'Alessio, Fernando de la Mora.
Collaborations in jazz: Paquito D'Rivera, Chucho López, Enrique Nery, Chilo Morán Rodolfo ‘Popo’ Sánchez, Eugenio Toussaint.