A bass (/ b eɪ s / BAYSS) is a type of classical male singing voice and has the lowest vocal range of all voice types. According to The New Grove Dictionary of Opera, a bass is typically classified as having a vocal range extending from around the second E below middle C to the E above middle C (i.e., E 2 –E 4).
The term "contralto" is only applied to female singers; men singing in a similar range are called "countertenors". The Italian terms "contralto" and "alto" are not synonymous, the latter technically denoting a specific vocal range in choral singing without regard to factors like tessitura, vocal timbre, vocal facility, and vocal weight.
A countertenor (also contra tenor) is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types, generally extending from around G 3 to D 5 or E 5, although a sopranist (a specific kind of countertenor) may match the soprano's range of around C 4 to C 6.
Grand opera is a genre of 19th-century opera generally in four or five acts, characterized by large-scale casts and orchestras, and (in their original productions) lavish and spectacular design and stage effects, normally with plots based on or around dramatic historic events.
Opera buffa (Italian: [ˈɔːpera ˈbufːa]; "comic opera", plural: opere buffe) is a genre of opera. It was first used as an informal description of Italian comic operas variously classified by their authors as commedia in musica, commedia per musica, dramma bernesco, dramma comico, divertimento giocoso.
Opera semiseria Opera semiseria ('semi-serious opera') is an Italian genre of opera, popular in the early and middle 19th century. Related to the opera buffa, opera semiseria contains elements of comedy but also of pathos, sometimes with a pastoral setting.
Opera seria (Italian pronunciation: [ˈɔːpera ˈsɛːrja]; plural: opere serie; usually called dramma per musica or melodramma serio) is an Italian musical term which refers to the noble and "serious" style of Italian opera that predominated in Europe from the 1710s to about 1770.
The lyric soprano is a warm voice with a bright, full timbre, which can be heard over a big orchestra. It generally has a higher tessitura than a soubrette and usually plays ingénues and other sympathetic characters in opera. Lyric sopranos have a range from approximately below middle C (C 4) to "high D" (D 6).
Tenor is a type of classical male singing voice, the vocal range of which is between the countertenor and baritone voice types. The tenor's vocal range extends up to C 5, or "tenor high C". The low extreme for tenors is roughly A ♭ 2 (two A ♭ s below middle C).