Like many Mexican big bands, La Séptima Banda aren't afraid to embrace extravagance, coloring their melodramatic songs with horns ready for a Broadway spectacular. Having rebranded several times over a tumultuous career that stretches back to the '90s, the group finally settled on their current name in 2014, quickly perfecting a sound poised between swinging retro-jazz and opulent modern pop. O Cambias o Me Voy plays like a glittering compilation of Séptima's various styles: They move gracefully between soulful and stately románticas ("O Cambias o Me Voy"), explosive cumbia ("Aguas Con el Amor"), and shamelessly joyful corridos ("25 de Diciembre").