Tini co-wrote all the songs on the album, and its production was mostly handled by her longtime collaborators Andrés Torres and Mauricio Rengifo, along with Felipe Contreras and Zecca.
"Pa" was released on 1 April 2024 as the album's lead single, and peaked at number one on the Argentina Hot 100, marking Tini's fifth chart-topper.
[4] It made Stoessel the first Argentine act since Miguel Caló in 2016 to debut in the top ten of Billboard's Latin Pop Albums chart.
[12] In February 2024, Tini won the Premio Lo Nuestro award for Urban/Pop Album of the Year for Cupido; in her acceptance speech, she revealed that her next musical project was imminent which she "never imagined" she "would [have dared]" to make.
[13] In anticipation of new music, Tini blanked out her social media on 15 March 2024 and shared a picture of a floor full of strands of cut hair to her Instagram Stories.
[29][30] Rolling Stone stated that the "Un Mechón de Pelo presents a straightforward look at Tini grappling with the complexities of being in the limelight from an early age, dealing with crippling mental health issues, and, by the end, convincing herself that she'll be alright".
[21] Griselda Flores from Billboard noted that it is Tini's "most personal project yet", and described it as a concept album whose subject matter details her struggles with mental health, media scrutiny, child stardom, professional disillusionment, and her celebrity.
[31] The album begins with its lead singe "Pa", thrilling and emotional ballad,[29][30] where she shares the fear she felt after nearly losing her father.
[31] In this track, Tini spoke about her struggles with balancing her artistic persona and her own identity, on which she repeats the assumptions people "have thrown at me for years.
"[21][26] The third track "Miedo", begins with choral singing[32] with a lot of echo and, when Tini's voice emerges, with the epistolary format of the song.
The song evokes chaos with the musical base, and refers to the lies that were invented about it and although, without giving names, about what was her relationship with Rodrigo De Paul, involving Cami Homs.
[21] On fifth track "Ángel", she returns to healing that inner child, and interrupts a piano ballad[32] with a rap to share her family's side of the headline-making rupture and legal battle between her father Alejandro Stoessel and famed TV host Marcelo Tinelli over the intellectual property of Disney Channel show Patito Feo, the series Tini got her start in back in 2008.
[25][32] In the song, she claims Tinelli lied about her father and instead of his status helping her get her breakthrough role on Violetta, as many assumed, Disney "didn't even want to hire" her because of it.
[21][26] The six track of the album "Buenos Aires" is a ballad, backed by acoustic guitar,[24] that has managed to capture the feeling of pain in its music video clip.
[32] The album's seventh track "Tinta 90", a reference to her signature hair color, Tini sings about dealing with her mental health in private and how those around her didn't even realize she was suffering.
Thania Garcia from Variety stated that it is "a concept album that touches on topics ranging from mental health to the evolution of her career as an actor and singer-songwriter.
[24] Melanie Cordero of Los 40 notes that "In this piece the artist explores the pain, anguish, fear and shock she felt in one of the most difficult moments of her life.
Her showing the most vulnerable side of her by allowing her fans to immerse themselves in the introspective path of her art [...] each topic represents a chapter of resilience and evolution.
[41] Diario Río Negro called the album a "perfect project" and added that it's "very well articulated, to usher in a new era, in which [Tini] makes a clean slate, opening the doors to her best version".