Operación Triunfo (series 4)
Operación Triunfo is a Spanish reality television music competition to find new singing talent. The fourth series, also known as Operación Triunfo 2005, was aired on Telecinco then La 1 refused a fourth series, from 30 July 2005 to 13 October 2005, presented by Jesús Vázquez.
Sergio Rivero was the winner of the series.Headmaster, judges and presenter
''Galas''
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