Polo was born in Bilbao, Spain where he studied at the Conservatory of Music with Professor Elisa Pascu.

He has performed with Maria Kliegel and the late Alfredo Kraus,[4] who, during his last years, invited Polo to appear as soloist in his concerts at Covent Garden in London and Maggio Musicale in Florence, Tonhalle in Zurich, and the Musikverein in Vienna.

Conductors with whom he has appeared as soloist include Christian Badea, Gunther Herbig, Antoni Wit, and Arturo Tamayo.

[7] Spanish composers Gabriel Erkoreka, Luis de Pablo,[8] Antón García Abril[9] and Carmelo Bernaola[10] have written works premiered by Polo, who was described as "outstanding" by Carlos Prieto.

[11] He currently teaches at the Centro Superior de Música del País Vasco-Musikene and at Conservatorio della Svizzera Italiana in Lugano.