Ayelén "Aye" Alfonso is a Paraguayan singer. She auditioned for Season 4 of Factor X Spain, and made it all the way to the final as part of Abraham Mateo's team.
In the finals, Alfonso was crowned the winner after defeating Mateo's other two acts, Coral Vicenti and Patrick Bel, as well as Teete from Vanesa Martín's team, in a four-way sing-off.