With one hand on his heart and the other on his lips, sending a kiss into the air, conductor Enrique Arturo Diemecke bids farewell to the audience amidst thunderous applause and shouts of "Bravo!" as he slowly exits the stage of the Palacio de Bellas Artes, leaving behind the memory of a memorable evening. He appears smiling, satisfied, and sweaty. The concert has been a demanding, exhausting, and emotional two hours. "A great achievement," he defined it moments before, presenting the final piece of the program, to highlight the two world premieres he had just performed with the National Symphony Orchestra (OSN).