Rihanna and ABBA have sung it. SZA even has a whole album named after it. We use it in our texts and everyday slang. So what does "SOS" actually mean? Here's everything you need to know about the ...

So many Beyoncé songs have changed the world — and one in particular changed Rihanna’s world. When the “SOS” singer was still part of a girl group, she auditioned for a producer by singing a song by ...