Sophie, 24, who is about to release her debut EP, is writing songs for various artists, reported Billboard.
"Our parents forced us to take piano for nine years and learn any instrument we could just 'cause they wanted us to be able to have that skill if we ever wanted to go into music, and now it worked out because I'm writing songs for everyone.
"I'm working on my EP. I've been writing songs for people lately, like I just wrote a track for Rick Ross, which is hysterical," she said.
"He doesn't get it 'cause he's just never understood hip hop or rap, but I grew up with it so that's what I've always listened to.