Añora comes from the verb añorar, which means to long for, to yearn for, or to miss deeply. It's a more profound and poetic way to express missing someone than simply saying extrañar.
In the context of "Yo Te Necesito," the singer expresses, "Mi alma te añora" (My soul longs for you). This word beautifully conveys the intense emotional pain and deep yearning the singer feels for their lost love, making it a powerful and memorable choice.
This song is a passionate plea for a lost love to return. The singer feels a deep connection, saying, "Qué grande es mi razón de estar contigo" [How great is my reason for being with you]. He misses his loved one terribly, feeling that his heart needs them and that they are the only thing that makes him happy: "Tan solo eres tú lo que me hace feliz" [Only you are what makes me happy].
The singer is clearly in distress, repeating "Yo te necesito" [I need you] throughout the song. He's been lost since his love left, admitting, "No sé de tu vida, no sé más de ti" [I don't know about your life, I don't know about you anymore]. His life feels empty without them, and he's desperate for their return, even saying, "Mis lágrimas faltan si lloro por ti" [My tears are missing if I cry for you], which is a pretty intense way to say he's cried so much he has no tears left!