He has worked and collaborated with artists like Alejandro Fernández, Bebu Silvetti, Juan Carlos Calderón, Vinnie Colaiuta, and Ramón Flores.
In 1999 he recorded a CD with his own songs in Spanish, under the name of Bella y oscura, entitled "Reina en prisión" (queen in prison) with Esmeralda Grao as the lead singer.
He was also nominated for two consecutive years for an Euterpe award by the Federación de sociedades musicales valencianas for his piece "Raíces" for best symphonic work.
He is the co-founder, with conductor Ignazio Terrasi, of the LA Grand Ensemble, a flexible formation that incorporates visual elements into their concerts.
[4] Juan Colomer publishes his works with Editions BIM of Switzerland, Editorial Piles, Tritó, and Rivera editores in Spain.