S:Aretha Franklin
A+:Mariah Carey,Whitney Houston,Patti LaBelle,Celine Dion
A:Beyonce,Christina Aguilera,pink,Lauryn Hill,Leona Lewis,Lady Gaga,Jessie J
A-:Kelly Clarkson,Ariana Grande,Faith Hill,Tonight Braxton,Carrie Underwood
B+:Alicia Keys,Sia,Demi Lovato,Adele,Keyshia Cole,Avril Lavigne,Amy Winehouse,Miley Cyrus
B:Mary J Blige,Ciara,Rihanna,Katy Perry,Fergie,Rita Ora,Camilla Cabello,Halsey
B-:Ellie Goulding,Britney Spears,Bebe Rexha
C+:Billie Eilish,Madonna,Shakira,Kesha, Lana Del Rey
C:Jennifer Lopez,Lorde,Janet Jackson,Carly Rae Jepsen……
F:Taylor Swift,Selena Gomez,Olivia Rodrigo
A+:Mariah Carey,Whitney Houston,Patti LaBelle,Celine Dion
A:Beyonce,Christina Aguilera,pink,Lauryn Hill,Leona Lewis,Lady Gaga,Jessie J
A-:Kelly Clarkson,Ariana Grande,Faith Hill,Tonight Braxton,Carrie Underwood
B+:Alicia Keys,Sia,Demi Lovato,Adele,Keyshia Cole,Avril Lavigne,Amy Winehouse,Miley Cyrus
B:Mary J Blige,Ciara,Rihanna,Katy Perry,Fergie,Rita Ora,Camilla Cabello,Halsey
B-:Ellie Goulding,Britney Spears,Bebe Rexha
C+:Billie Eilish,Madonna,Shakira,Kesha, Lana Del Rey
C:Jennifer Lopez,Lorde,Janet Jackson,Carly Rae Jepsen……
F:Taylor Swift,Selena Gomez,Olivia Rodrigo