Tru-la-lá is one of the best known

cuarteto Cuarteto ( es, quartet), sometimes called cuartetazo, is a musical genre born in Córdoba, Argentina. The roots of the cuarteto ensemble are in Italian and Spanish dance ensembles. The name was coined because the early dance-hall numbers were i ...

bands in Argentina. The band's main singer for many years was Gary, "voice of an angel".Obituary (Spanish)
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References

Argentine musical groups {{Argentina-stub