contralto

noun1

1. •
   The lowest female voice or voice part, falling between tenor and mezzo-soprano. The terms contralto and alto refer to the same musical pitch range, but among singers, the term contralto is reserved for female singers; the equivalent male form is counter-tenor. Originally the contratenor altus was a high countermelody sung against the tenor or main melody.

   • As for her dress, it was invariably rich, effective, and chic, yet in good taste. Lastly, her feet and hands were astonishing, and her voice a deep contralto. — 1867