You could say it was the song of the Argentina-Australia match at the 2022 FIFA World Cup in Qatar Dec. 3. As the two teams duked it out on the field (Argentina won, 2-1), excited Argentine fans -who seemed to number in the thousands– repeatedly chorused one particular song. The song is “Muchachos, Ahora Nos Volvimos a Ilusionar” (which translates loosely to “Boys, We Have Our Hopes Up Again”) by La Mosca, the Argentine nine-piece band that plays a blend of ska, rock and pop, laced with tango pathos. Explore See latest videos, charts and news See latest videos, charts and news The song had already been heard around the world following Argentina’s nail-biting 2-0 win over Mexico Nov. 26, after social media was flooded with clips of the team singing triumphantly in the locker room. “Muchacho...