[2] It was released on February 25, 2021 through Sony Music Argentina, as single from MYA's upcoming second studio album.

A music video was released alongside the song.

[1] "Fuiste Mía" was written by Maxi Espindola, Agustín Bernasconi, Esteban Noguera and Andy Clay[4] and produced by Mapache Producciones.

[6] A Martin Seipel-directed music video for "Fuiste Mía" was released alongside the song on February 25, 2021.

[7] The video was filmed in isolation during the COVID-19 pandemic in early 2021 at the Houston, Texas by Ha*Ash and at Buenos Aires, Argentina by MYA.