voices

• Soprano


  Highest range of female voice
• Mezzo-Soprano


  Female voice range lying between a soprano and alto (middle voice)
• Alto


  The lowest female voice
• Tenor


  A high adult male voice
• Baritone


  Male voice range lying between a tenor and a bass (middle voice)
• Bass


  The lowest male voice
• Choir


  A group of singers who perform together
• A cappella


  Unaccompanied singing
• Backing vocals 


  Singers who support the main singer, usually by singing in harmony in the background