The San Francisco native has performed with many prestigious international companies & festivals including the San Francisco Opera (USA), Festival d’Aix-en-Provence (France), Teatro Comunale di Bologna (Italy), Theater Basel (Switzerland), Festival Puccini (Italy), Staatstheater Braunschweig (Germany) Opera Theater of St. Louis (USA), Michigan Opera Theater (USA), Bunkamura Orchard Hall (Japan) and the Shanghai National Grand Theater (China) in repertoire that includes the title roles of Don Giovanni and Eugene Onegin, Rodrigo (Don Carlo), Figaro (Il barbiere di Siviglia), Lescaut (Manon), Il conte Almaviva (Le nozze di Figaro), Danilo (The Merry Widow), Prince Yeletsky (The Queen of Spades), Dandini (La Cenerentola), Marcello & Schaunard (La bohème), Ping (Turandot), Albert (Werther), among others.

An avid recitalist, he made his Carnegie Hall debut in 2008 and returned again in 2011 & 2017. He was a member of the Marilyn Horne Foundation, which presented him in recital in New York and Pennsylvania. He has also presented concerts for San Francisco Opera’s prestigious Schwabacher Debut Recital Series, the New York Festival of Song and was featured in the prestigious Podium der Jungen series in Hannover, Hamburg & Frankfurt (Germany). Mr. Villanueva is also the first American ever to have been awarded the coveted Tosti song prize from the Istituto Nazionale Tostiano in Ortona, Italy.

He has been featured as soloist with orchestras such as the San Francisco Symphony, the Los Angeles Philharmonic, the Accademia Nazionale di Santa Cecilia, the Toscanini Orchestra of Parma, the Göttinger Symphonie Orchester, the Norddeutscher Rundfunk (NDR) Philharmonie and the Orchestra de la Suisse Romande in repertoire that includes Orff’s Carmina Burana, the Fauré and Brahms Requiem, Copland’s Old American Songs, Vaughan Williams’ Songs of Travel, the Dvorák Te Deum, and Ligeti’s Aventures & Nouvelle Aventures.

Mr. Villanueva is a graduate of Music Academy of the West, the Steans Music Institute at the Ravinia Festival, San Francisco Opera's Merola Program and the Seattle Opera Young Artists Program.