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Corrido is a Mexican narrative ballad tradition that tells real or imagined stories about heroes, outlaws, battles, tragedies, and contemporary events. It is strophic, usually built from octosyllabic lines organized into quatrains with assonant rhyme, and features a declamatory vocal delivery designed to make the storyline clear. Musically, corridos are commonly set to dance-derived rhythms such as polka in 2/4 or waltz in 3/4, reflecting 19th‑century European influences absorbed in northern Mexico. They are performed by different ensembles—most famously norteño groups with accordion and bajo sexto, mariachi with violins and trumpets, or banda with brass and tuba—yet the poetic form and storytelling remain central. Typical corridos open with a saludo (greeting/announcement), present the narrative in chronological episodes rich with names, places, and dates, and close with a despedida (farewell or moral). Modern variants include narcocorridos and, more recently, corridos tumbados that fuse the narrative form with contemporary urban and trap aesthetics.

Narcocorrido is a modern, narco-themed offshoot of the traditional Mexican corrido, a narrative ballad form that chronicles real or imagined events. It focuses on the drug trade and its actors—smugglers, cartel leaders, gunmen, and law enforcement—often naming places, dates, and specific episodes to heighten realism. Musically, it follows the corrido’s strophic storytelling over norteño or banda frameworks: brisk 2/4 polka or 3/4 waltz grooves, diatonic harmonies, and memorable vocal refrains. Typical instrumentation includes accordion and bajo sexto in norteño settings, or tuba, clarinets, trombones, and tambora in banda settings, with sierreño (12‑string guitar plus tuba) variants also common. The genre is culturally influential yet controversial, facing periodic bans and public debate due to perceived glorification of crime and depictions of violence.

Regional Mexicano (Música Mexicana) is an umbrella term for folk-derived regional styles from Mexico and their Mexican American continuations in the Southwestern United States. Rather than one single sound, it gathers subgenres tied to specific regions—such as mariachi and ranchera (Jalisco/Centro-Occidente), norteño and sierreño (Norte), banda sinaloense (Sinaloa), and narrative corridos that travel nationwide. Its foundations reach back to the 16th–19th centuries, when Indigenous musical practices fused with Spanish song forms, African rhythms, and European dance-band traditions (polka, waltz, schottische), later meeting brass-band instrumentation and, in the North, accordion-led ensembles. In the 20th century it consolidated through radio, cinema, and records, and in the late 20th century became a major Spanish-language radio format in the U.S. Today it ranges from emotive ranchera ballads to high-energy banda and norteño dance music and modern corridos that reflect contemporary social life.