[8] Wiwibloggs noted that "Ay mamá" has choral verses build into an electropop chorus,[9] which they had previously described as Bandini's particular style and something that is "anything but safe and lame" even within the context of the Eurovision Song Contest (ESC).

[10] During composition of the song, the band experimented with different synthesizer sounds, and the line "I don't know why people are so scared of our tits" was originally being recorded with a vocoder.

[5][12] She composed it on the piano[13] and began developing it for submission to Benidorm Fest, Spain's ESC preselection, eight years after originally writing it; she felt there was something special in the song and decided to develop it for the contest, adding that she "liked the demo, but [was not] in love with it" and "would withdraw if by the deadline [she] wasn't convinced about it" – she said she did love the final version.

In the final version it is "You, who bled for so many months through your life", while originally it had been "You, who pulled my head out of your pussy"; Ribó changed this knowing that such explicit a lyric would not be accepted for the ESC and for wanting to make a song that could resonate with everyone from childhood to old age,[14][15][9] later saying that she felt Spain was still a country that generally balked even at the word "tit".

[5] The Heraldo de Aragón wrote in May 2022 that the song had become "one of the feminist anthems of Spain" and praised its ability to get people both dancing and thinking.

It was also used across Telecinco and other Mediaset España media from its release in 2021, including in news features produced about censorship of female nipples.

[30] Describing 2022 as "the year of the boob" in August 2022, El Mundo wrote that Prime Minister Pedro Sánchez had threatened to pull Spain out of the ESC if broadcasters censored Ribó performing topless, should that have happened, with his cabinet supporting the idea of Ribó performing topless at Benidorm Fest.

[32][33] Spanish music comedy duo Los Morancos recorded a parody called "Ay Omá" lampooning the state of health services in Spain, particularly for older women.

[34] The viral Benidorm Fest performance of "Ay mamá" was recreated by Susi Caramelo [es] on Tu cara me suena during the week of the Eurovision Song Contest 2023.

[11] It was directed by Salvador Sunyer,[53] whom Ribó chose to work with because she knew he could find the right balance of "humour, poetry, beauty and femininity".

[56]: 5:05 [57] Sunyer also suggested that some of the cut footage, which includes a natural birth, may be used in a music video for "Ay mamá (Génesis)".

[58][59] At Festival Ítaca in L'Estartit in June 2022, the group was joined by a giant puppet with a breast exposed, also called Rigoberta, from Geganters de la Bisbal d'Empordà, which was dancing in the audience.

[61] As Bandini's popularity grew in 2021, Wiwibloggs wrote that she was "one of the hottest names in Spain's music industry" and said she would be the dream artist to represent them at the 2022 Eurovision Song Contest;[10] interviewed by EFE, Ribó said she would consider taking part but may wait for a future edition.

[14] It then competed in the grand final, with its staging "not leaving anyone indifferent";[6] the performance featured, towards the end of the song, a large spherical breast.

[13] She later told HuffPost that she realised she was not destined to win the competition, adding: "going to Eurovision would be super fun, but I prefer that my song has become a part of society".

[71] In April 2022, "Ay mamá" was voted the best non-winning song from a national final by ESC fan website escgo!

[56]: 4:57–5:17 [76][5][6] On 27 April 2022, Bandini released "Ay mamá (Génesis)", the version of the song that was originally submitted to Benidorm Fest.

[11] Bilbao-based musicians Krusak and Xabier Iriarte collaborated to record a Basque cover of the song in April 2022, "Ene ama", which also became popular.

[82] On 13 May 2022, the song was performed by contestant Scorpio on the Catalan singing competition show Eufòria, with a mural projection of images of women breastfeeding shown behind.

[11] The Levi's Music Project collaborations intend to inspire creativity, and after the remixes were submitted Ribó chose her favourites and held a live feedback session with the creators on Discord.

[85] A cover version by Azúcar Moreno was released in April 2023; the group had represented Spain in the Eurovision Song Contest 1990 and also competed in Benidorm Fest 2022.