Amy Lee range goes from the E flat two octaves below middle C to the E natural three octaves above middle C. This range thus includes most of the tenor notes, all of the alto notes, and many soprano notes. Her voice type can thus be an alto, contralto, mezzo-sporano, and/or soprano.
I've never heard of a male alto. The only male voice categories I've heard are... Male Soprano | Counter-Tenor | Tenor | Baritone | Bass With Females... Soprano | Mezzo-Soprano or Alto | Contralto or Female Tenor
Here is a complete list of Disney Princesses and their Voice Types in order of their film: Snow White: Soprano Cinderella: Mezzo-Soprano Aurora: Alto Ariel: Soprano Belle: Mezzo- Soprano Jasmine: Soprano Pocahontas: Alto Mulan: Soprano
alto is a voice part. for female there are 4 voice parts. soprano 1(high range) soprano 2(medium high range) mezzo-soprano(medium with a darker tone. also know as a "belter") and alto(lower range). So an alto is a lower female voice.
There are bass, soprano, and alto. But there are more than Three sizes! There is the Eb soprano, Bb soprano (most commonly seen), Alto clarinet, Bass clarinet, Contra-alto clarinet, and contra-bass clarinet. There is also an A clarinet!