The lyrics of the song reflect "a chant to move forward, to feel free and to do whatever they wanted to do",[a] as Eva explained, as they felt their band was drifting from its origins.

[8]: 1:31–2:14 Lucía Noguerales from Onda Cero compared the introduction of "El universo sobre mí" to the song "Strawberry Fields Forever" by the Beatles, as it uses a Mellotron.

[3] El Crítico de IA[b] wrote for the Spanish magazine Popes80 that the song is a pop rock tune that "has the incredible ability to connect with our deepest emotions, transporting us to dreamy places and awakening feelings we thought we had forgotten.

"[10] The European Space Agency added the song to its playlist for the launch of the Jupiter Icy Moons Explorer (JUICE) interstellar spacecraft in 2023.

[11] In Spain, "El universo sobre mí" debuted at the top of the Spanish chart on 6 March 2005, where it stayed for three weeks.