It was released on 8 April 2021 through Epic Records as the lead single for her seventh studio album Tutto accade.

The track, written by Davide Petrella and produced by Dardust,[2] describes a new positive transition in the singer's life following the COVID-19 pandemic.

[4] In an interview with Vanity Fair Italia singer described the meaning of the song:[5]"I love light, but I have learned that there is also darkness.

This awareness [sung in the single "Piuma"] leads to "Sorriso grande", a sunny, open song charged with a newfound energy that represents rebirth, the rediscovery of self in a new light, the image of a strong woman who knows who she is and what she wants and has found the courage to be herself.

[6] The video was shot in the same setting as "Piuma", an apartment that, if in the previous single appeared gray and claustrophobic, in "Sorriso grande" is colorful and gives space to the outdoors.