Juan and Juana channel have a bunch of songs showing how they want to present the rhythms available. One of the pieces is a queen of simplicity with a repetitive pattern but still offering the listener a variation keeping the mind joyfully focused! It feels so to me;

How about you? after several hearings?

Los Ritmos del Tango - 12 Tresillos de Negra del Tiempo Simple - [1ay-3ay-]
https://youtu.be/UkOwsCGyTD8