Thalia is Mexican, and has been in the music biz since her teen years in the late 80's early 90's and has made tons of music. Her 90's music has a definite rock flavor though she's moved to more progressive in the last 12 years or so. She's a superstar in Latin America. So not a flash in the pan type that's here today and gone tomorrow. She's got all the qualities of being popular for a long time.
In spite of all that, I'd never heard of her until coming to Ecuador.