She studied in Conservatory of the Basque Country (Musikene), Hochschule für Musik und Theater Hamburg, Messiaen Academy, Zwolle, Liceo Conservatory, Barcelona.
Master classes Jaime Martin, Magdalena Martinez, Robert Dick, Octavio Diaz Alvaro, Paul Edmund Davies, Carin Levine, Emmanuele Ophelé, George Alyrol...
Scholarship for Music from the Biscay Forum Delegation,Landesmusikrat Hamburg", DAAD scholarship and Yehudi-Menuhin
Guiomar collaborated with many orchestras and ensembles, like "Bilbao Symphony Orchestra", "Euskadi Symphony Orchestra", "Schleswig-Holsteinisches Sinfonieorchester", "Bilbao Philharmonia", "ensemble Intégrales" “Volumina Consort”, “Decoder Ensemble”, “OPUS XXI” or “Ensemble XXI”.