Let's pretend we're unaware that Dan Auerbach is the frontman of the Black Keys, and let's consider his new band, the Arcs, on their own merit. Who would the Arcs best be compared to? Well, the Black Keys immediately come to mind. The Arcs keep with the psychedelic, riff-heavy blues-rock Auerbach has made his bread and butter, and they'll no doubt attract the loyal legions of Black Keys fans. However, the real highlight of tonight's show is the opening act—the exhilarating, all-female mariachi band, Mariachi Flor de Toloache. This multicultural seven-piece group plays traditional mariachi and ranchera, with Latin jazz and R&B influences, sung in both Spanish and English. Props to Auerbach for introducing Flor de Toloache to a wider audience. Here's hoping the Black Keys fan bros keep an open mind and give an enthusiastic welcome to these immensely talented women. SANTI ELIJAH HOLLEY