Studied at the Madrid Highschool, at the Musikhochschule Zürich under Proffesor Thomas Indermühle, and at the Scuola di Musica di Fiesole, Italy.
Member of Sinfonieorchester Basel in 2003-2004. Principal oboe with the Vlaamse Oper, Belgium for a season of the opera Flight, by Jonathan Dover.
As a soloist, she has performed with several orchestras and was invited to the following festivals: Davos, Martinü, Luzern (Switzerland), Audio-Art (Poland), Impuls (Austria), Otoño de Madrid, Alicante (Spain). Recommended by Heinz Holliger, she participated several times in the Lucerne Academy Festival with Pierre Boulez and the Ensemble Intercontemporain. She was invited by Pierre Boulez to play as soloist (under his direction) in the opening concert of Agora Festival 2004, Paris.
She played with Ensemble Modern, Ensemble Recherche, Ensemble Intercontemporain and Ensemble Cort-Circuit.
In 2003 Pilar Fontalba received the Hegar Preis (Zürich) for the premiere of Kinêsis, by Gérard Zinsstag.
She recorded a CD with music for oboe and electronics from Nicolas Verin in Radio France for INA, an oboe concert from Víctor Carbajo in Madrid for Green Tree, and Manuel Angulo oboe concert in Córdoba for Verso.
Currently, she is Solo Oboe of the Navarra Sinfony Orchester, assistant of Thomas Indermühle at the Baleares Highschool, and member of Ensembles Phönix, Laboratorium and Ö.