I love "Porque Te Vas" by Jeanette and "Rosas" by "La Oreja De Van Gogh".
I used to listen those two songs for nearly the whole day. Please try, you will love them.
Besides, I'd like to recommend you some singers that I love, you can find their songs in the net.
1) Alex Ubago. especially for the song named "Sin Miedo a Nada" sung with "La Oreja De Van Gogh"
2) La Oreja De Van Gogh, this is a band. I love the Lead singer very much. I love her voices.
3) Enrique Iglesias, a charming man.
4) Christina Aguilera.Some spanish songs are well as her Engligh songs.
Hope you like them too