Research on R'n'B CD covers

Keeping with the 'American Feel' of R'n'B videos and CDs I have decided to base my CD cover more on American R'n'B artists rather than English ones. Therefore I have chosen 3 mainstream R'n'B Female Artists which I will base my research and Cd cover on.
Firstly I have chosen Beyoncé:

As you can see the majority of the covers are in either greyscale or black and white, this is what I planned to do with my CD cover too. Furthermore at no point is there any other person on the cover other than the artist and the picture is shot mostly close up or mid-close up. This gives a more personal feel to it and allows the audience to see the star from up close allowing them to recognise the artist more. Beyoncé's lips are either closed and slightly pouting or parted seductivley which is How I want my artist to pose. Additionally in all the pictures the star is dressed in seductive clothes or revealing alot of skin. Lastly, I noticed that in all these pictures Beyoncé is looking into the camera which is more attention grabbing than for example one were she is looking away.
 
Secondly I have chosen Mary J Blige:

Once again the artist is the only one on the cover and close up and mid-close up pictures are used and either grey scale or black and white effects are used. Unlike Beyoncé's pictures Mary is not looking straight into the camera for most of them I don't want to use this technique as I believe that the eyes are the first to grab an audience's attention.
Lastly I have chosen Mariah Carey:

Clearly unlike the two previous artists mariah doesn't follow many conventions such as close ups and grey scale. Many of her pictures are mid-long shots of her posing seductivley or posing with her left hand behind her neck. In all of them her hair is in windswept and flosting around to give her a goddess look. On the last picture her name stands out on the cover from her black and white picture which I really think is a good idea and I am hoping to achieve on my cover.

I like most of these pictures especially as they are all similar and follow the same convetions. This shows that I will try make my cover follow as many R'n'B conventions because it fits in well with my ideas.

All these artist are black female or partially black (Mariah) and sing R'n'B love songs similar to Lizzie.