Julio Iglesias was a well-known star by the time he performed at Eurovision in 1970, as his first album peaked at number 3 in Spain. However, after Eurovision he ascended to even greater heights. He released many other songs that charted, including duets with Willie Nelson, Diana Ross, Stevie Wonder, Frank Sinatra, Dolly Parton, Sting, and Art Garfunkel. He won a Grammy for his album Un hombre solo, which included the hit Lo Mejor de Tu Vida. As a final fact, Julio is the father of Enrique Iglesias, a perhaps even bigger star than his chart-topping father!
Here is a link to his song, Un hombre solo: https://www.youtube.com/watch?si=7LanNzZFtYnnwGvY&v=ccPeGTWqOSA&feature=youtu.be