Solo singing is performed by one person. Due to different genders and individual conditions and timbres, it can be divided into soprano, mezzo-soprano, alto, tenor, baritone, bass and other solo vocals. Its timbre characteristics are: the soprano is gorgeous and dexterous, the mezzo-soprano is gentle and mellow, the alto is plump and generous, the tenor is high-pitched and bright, the baritone is rich and solemn, and the bass is deep and solemn. The vocal ranges also vary between them. The sopranos are also divided into: coloratura soprano with crisp and dexterous timbre; lyric soprano with beautiful and sweet timbre; dramatic soprano with strong timbre. Tenors include lyric tenors with clear and lyrical timbres; dramatic tenors with magnificent and solid timbres, etc.