Celebrating its 10th anniversary, Orquestra XXI took to the stage with a programme centred on Mahler's 5th Symphony, with concerts acclaimed by national and international critics. «It's been a long time since we've heard a Mahler 5th this beautiful. The great halls of Europe would do well to programme it with this fine team» — Bachtrack. The programme opened with Entropía by the Portuguese-Spanish composer Inés Badalo.