Titled by the Conservatory of San Sebastián in music theory and piano, Oscar has studied with great teachers as Javier Pérez de Azpeitia. He also studied jazz at the school founded by pianist Iñaki Salvador. In the world of acting has given concerts in cities like San Sebastián, Irún, Toledo, Albacete, Talavera de la Reina, Brest and Quimper (France), both solo and in groups of different styles. He has also worked in recording and making arrangements of four disks. As a composer, Oscar has released two ballets in the Great Theater of Cáceres and Andoain (Guipúzcoa) and he is the composer of the soundtracks of all short films by filmmaker David R.L.