His teachers included Roberto Urbay, Henrietta Mirvis, Irina Plotnikova, Joaquin Soriano, Alicia de Larrocha, Dimitri Bashkirov, Fou Ts'ong, Zenaida Manfugás and Martha Argerich.
This EMI Abbey Road recording received a “CHOC“ in the magazine Le Monde de la musique and brought him great acclaim in Vienna, London and Paris.
As part of this promotional project, his solo recital was recorded and released within the phonographic magazine FonoForum, along with the premier of one of his own works: L'Enigma.
The new composition First concerto for Piano and Orchestra by the Colombian composer Arturo Cuellar, premiered at the Colón Theater of Buenos Aires in 2001.
Vallina opened Martha Argerich Project Lugano Festival 2007, performing the Lutoslawsky Paganini Variations with the Orchestra della Svizzera Italiana.