In addition to composition, Catán had a fruitful career as a writer on music and the arts, reflective of his knowledge of world literature.

Catán died aged 62 on April 8, 2011, in Austin, Texas, a few days after he attended rehearsals for Il Postino at the Moores Opera Center at the University of Houston.

At the time of his death, Catán was a member of the faculty at College of the Canyons and had been commissioned by the Sarah and Ernest Butler School of Music at the University of Texas at Austin to write a new opera, Meet John Doe.

Music critic David Patrick Stearns wrote, "Though Catán's style was often compared to that of Puccini and Debussy, it changed with every work, from the lush nature painting of Florencia en El Amazonas (1996) to the Cuban ethnic influences of Salsipuedes (2004), and the more integrated sonorities that portrayed the inner emotions of Il Postino (2010).

But perhaps the greatest of my debts is having learnt that the originality of an opera need not involve the rejection of our tradition—which would be like blindly embracing the condition of an orphan—but rather the profound assimilation of it, so as to achieve the closest union between a text and its music.

"[10] Catán also cited in many interviews Igor Stravinsky, Maurice Ravel, and Erich Wolfgang Korngold among those who had most influenced his music and compositional style.