Multiplicacion = Multiplication / Medianoche En Moscu = Midnight In Moscow

Released by RCA Victor in the early 1960s, this single features the Argentine vocal quartet Los Mac Ke Macs, a group renowned for their contribution to the diffusion of international pop, jazz, and folk styles within Latin America during the mid-twentieth century. The record represents the group's efforts to interpret popular global hits through their distinctive vocal harmonies and arrangements, serving as a snapshot of the era's cross-cultural musical exchange.

The tracks demonstrate the quartet's polished studio sound, which characterized their long-standing tenure with RCA Victor. Los Mac Ke Macs were known for their sophisticated vocal layering and tight, professional orchestration, which allowed them to successfully navigate diverse genres. This specific release reflects the label's strategy of adapting contemporary international melodies for the domestic Argentine and broader Latin American markets, a practice that cemented the group's reputation for accessibility and technical precision.