Los Alegres del Barranco is a Mexican musical ensemble associated with regional styles of Mexican popular music, particularly bolero and romantic ranchera-influenced ballads. Emerging in the mid-20th century, the group became known for vocal harmonies and sentimental arrangements that emphasized melodic singing and acoustic instrumentation typical of romantic trios and conjuntos of the era. Their repertoire centers on themes of love and heartache delivered in a smooth, melodic manner, aligning them with other Latin American vocal groups that popularized bolero and romantic song across Mexico and Spanish-speaking audiences.