From spinner.com. If you were a teenager in the late '70s, regardless of what kind of music you liked, you could not escape Donna Summer--and you didn't want to. Beginning with the orgasmic "Love to Love You Baby" and continuing with a string of hits such as the cheesy-yet-cool "MacArthur Park, "Hot Stuff," and "Bad Girls," she made disco hot and sexy.
At one point, both "Hot Stuff" and "Bad Girls" were in the Top 5 at the same time, making her one of very few artists (namely, The Beatles and The Bee Gees, IIRC) to accomplish this.
Proving her talents exceeded her genre, Summer had early '80s hits such as "She Works Hard for the Money" and "Unconditional Love" (which, as I recall, didn't reach the Top 40 but should have).
I'm sorry to hear of her passing. Unlike certain other recent celebrity deaths, hers truly comes as a shock.