Joaquín and Lucía Galán, better known as Pimpinela (Spanish for pimpernel) are an Argentine duo famous for singing romantic musical pieces and known for their original singing style. They have sold over 12 million records in Argentina and a total of 18 million worldwide, making them one of the best-selling Latin music artists.

Source: Wikipedia (https://en.wikipedia.org/wiki/Pimpinela)