Alicia Keys is an alto. An example of a soprano would be Ariana Grande. An example of a mezzo soprano would be Beyonce.
she is an alto mostly but not often a soprano
she is a soprano
she is soprano
Nothing is lower than a soprano and higher than an alto but there are such things as soprano 2s and alto 1s which are in between although they are not there own section
Eponine can be either a mezzo or an alto.
A soubrette Mezzo-Soprano.