To break R&B into subcategories does a disservice to the music. I like to live in a zone where I can do whatever I want, where I don't have to worry about genre.
I was never an R&B artist. People coined me one, but that's because, especially if you're in the States, if you're black and you sing, then you're R&B.
R&B is the one thing that has influenced every kind of music. Every artist that there is, from those that are sung the most to Adele - you know, she was so influenced by so many R&B artists and soul music - it's clear in her writing that that's where it comes from.
I came from a strong jazz/ singer-songwriter/folk influence, but in L.A., I learned how to have a balance between all these genres and R&B music and hip-hop, mixing them all together.