Gelber is an Argentine pianist born in Buenos Aires, with Austrian and French-Italian descent.
[2] When he was aged 15, Gelber played the Schumann Concerto under Lorin Maazel in his native Buenos Aires, attracting considerable attention.
At age 19 he went to Paris to study under Marguerite Long, and the following year he won 3rd Prize in the Long-Thibaud Competition.
He specialises in the Classical and Romantic repertory, but came late to Rachmaninoff, due to the stubbiness of his fingers.
[2] He resides in Monte Carlo[2] and Buenos Aires, in the art deco Torre Saint in the neighborhood of Once.