Costal de huesos literally translates to "sack of bones". It's a stark, informal phrase used to describe a very thin person.
In this heartbreaking song, Junior H uses it as a self-deprecating metaphor. When he sings, "Querías este costal de huesos" (You wanted this sack of bones), he's expressing the feeling that his lover only wanted him physically, reducing him to an empty shell. This raw, emotional phrase is a powerful example of the poetic and direct language in modern regional Mexican music.
Junior H brings his signature melancholic corrido tumbado sound to "LAS NOCHES", delivering an honest confession about being completely unable to move on. He opens by admitting he is still stuck in the past: "ya ha pasado tanto tiempo y aún vivo el ayer" ("so much time has passed and I still live in yesterday"). Even though he is tired of waiting, his brain refuses to quit fantasizing about a comeback. He literally calls himself "este costal de huesos" ("this bag of bones"), a self-deprecating Mexican idiom showing how worn down and fragile he feels after realizing all her sweet talk was "mentira como tus besos" ("a lie like your kisses").
The whole track feels like an internal debate with his own pride. He admits he ignored all the red flags with "tapándome los ojos, confié en ti" ("covering my eyes, I trusted you"), which sent him tumbling straight down from the peak: "me tenías en la cima, desde arriba fui a caer" ("you had me at the top, from way up high I fell"). He knows trying to change her mind is impossible, yet whenever the sun goes down, his thoughts wander right back to "las noches que hacíamos el amor" ("the nights we made love"). It is blunt, petty, and painfully relatable late-night overthinking set to acoustic guitar chords.
Junior H taught himself guitar and accordion off YouTube while working the kitchen at a Wendy's in Utah, where his family had moved in 2015 from Cerano, Guanajuato. Born Antonio Herrera Pérez in 2001, he uploaded his own songs under the name until one of them, "No Eh Cambiado", passed two million views and convinced him to make a career of it. The debut album Mi Vida en un Cigarro arrived in 2019.
He writes sad music, mostly: heartbreak over sierreño guitars, the corner of corridos tumbados people call urban sierreño. $ad Boyz 4 Life II (2023) reached number 14 on the Billboard 200 carrying no guest features at all, and produced "Y Lloro" and "Las Noches". Away from his own records he sings on "El Azul" with Peso Pluma, and on "Lady Gaga" with Peso Pluma and Gabito Ballesteros, which entered Hot Latin Songs at number one. In February 2026 he and songwriter Gael Valenzuela released the joint album DEPR</3$$ED MFKZ, a number one on Billboard's Top Regional Mexican Albums chart.