The performer of “Mambo No. 5” remembers how he lived through the 1990s, the period in which he discovered Latin music and promoted a style. The German singer will present his show in December. By Luis Valdovinos – El Sol de México How does one define a “golden age” for music and culture? That’s how Lou Bega defines the 1990s, the decade in which the German singer built his career from the fusion of Latin rhythms with dance. “The ’90s were a golden age just before the internet became really popu