That's all fine and dandy, but....
You're not getting anything out of this, so why does it matter? HUH?! Beyoncé's not reading this thread, so your crooked finger pointing is all for nothing.
Anyway, everything that goes into a song gets credit. Beyoncé arranges all of her songs, so she gets credit for it. There's tons of videos of her coming up with harmonies and melodies. Go watch them.
I've written lots of songs (lyrics), but the words aren't going to sing themselves, arrange themselves, come up with harmonies and melodies themselves, make beats for themselves, master and mix themselves. It's not a song until all of these things are done, and that involves other people.
It's very evident when reading some of these comments that most of you are very ignorant when it comes to song writing and the crediting process. If you're gonna talk ****, make sure you know what you're talking about.