Two years later he enrolled in the Conservatorio Nacional de Música (National Musical Conservatory of Peru) to study violin but did not finish.

At the end of his secondary education, he entered the Faculty of Architecture at the National University of Engineering, but returned to the Conservatory in 1988 to major in composition.

Studying under such professors as Enrique Iturriaga and Celso Garrido Lecca, Junchaya graduated in 2005 with a second specialty in composition teaching.

Junchaya has participated in master classes and workshops with Mario Lavista, Aurelio Tello and Cirilo Vila, among others.

He studied conducting with Miguel Harth-Bedoya and Eduardo García-Barrios, and also participated in workshops with David MacKenzie and Carlos Fernández Aransay between 2002 and 2003.