I was insipired by the other thread talking about B team performers..
If you should grade these artists (A, B, C, D you can give - and +).
What would you grade them as performers?

Beyonce
Ciara
Rihanna
Katy Perry
Gaga
P!nk

For me:
Beyonce A+
Ciara A or A+
Rihanna B
Katy B- or C
Gaga A or A-
P!nk A or A+

Beyonce A+
Ciara idk
Rihanna B
Katy Perry B
Gaga A+
P!nk A+

Beyonce A+
Ciara B+
Rihanna C
Katy Perry D-
Gaga B
P!nk A+

Beyonce A
Ciara B+
Rihanna C
Katy Perry D-
Gaga B+
P!nk A-

Beyoncé A+
Ciara C
Rihanna C-
Katy Perry D
Gaga A+
P!nk A+

Beyonce A+
Ciara A-
Rihanna B
Katy Perry C-
Gaga A
P!nk A

Beyonce: A+
Ciara: dunno
Rihanna: B-
Katy Perry: D
Gaga: A-
P!nk: A

Beyonce A+
Ciara C+
Rihanna B
Katy Perry B-
Gaga A-
P!nk A

Ciara should be higher but Performing live but not singing live is redundant to me.

A's
Beyoncé
Pink

B's
Gaga
Ciara

C
Rihanna

D-
Katy

Beyonce A
Ciara who she
Rihanna B+
Lady Gaga 2008-2010: A+ 2011-2012: A- now: B+
Katy Perry B
P!nk who she

Beyonce A-
Ciara A+
Rihanna B-
Katy Perry D
Gaga (don't really like her so i won't grade)
P!nk A+

Beyonce A+
Ciara C+
Rihanna A-
Katy Perry B-
Gaga B
P!nk B+

Beyonce B+
Ciara B
Rihanna B+
Katy Perry D
Gaga C
P!nk B

Beyonce A+
Ciara - I'm not familiar with her
Rihanna C-
Katy Perry D
Gaga B
P!nk A-

Not singing live?

Beyonce A
Ciara B
Rihanna C
Katy C
Gaga C
P!nk A

Beyonce A
Ciara B+
Rihanna C-
Katy Perry F
Gaga C+
P!nk B