Corazón means "heart" in Spanish. While it might seem like a common word, its usage in this song is particularly poignant and central to the emotional core of the lyrics.
The phrase "Este Tonto Corazón" (This Foolish Heart) is the title and a recurring motif, personifying the heart as a separate entity that stubbornly holds onto love despite the pain. This personification makes the word especially engaging and memorable in the context of the song's narrative of heartbreak and longing.
This song, "Este Tonto Corazón" by Corazon Serrano, is all about the intense pain of a breakup. The singer is completely heartbroken, feeling utterly alone with just her body and memories. She keeps asking, "dónde estás por qué te fuiste mi amor" [where are you, why did you leave, my love?], because she knew she would die if he left her. Talk about dramatic!
She's realizing that all his kisses and caresses were fake, and now her nights are cold and empty. She's even talking to her own heart, saying "ya le dije a este tonto corazón" [I already told this foolish heart] to stop suffering and try to forget him. It's a powerful and emotional plea to move on, even though it feels impossible.