Anyone know any Spanish songs that sound like Sia or Michelle Branch?

I need a few good Spanish songs sung by a FEMALE. Since I am NOT a singer, I need a song that is relatively easy to sing (You know... without a lot of high and low notes and stuff.) I was wondering if there are any decent songs that sound like very airy and light like Sia or Michelle Branch. Or any good Spanish female singers if you can help otherwise. I am really dreading this assignment, so thanks. <3