Файл:Bass voice range.svg{{Information |Description=position of C on a keyboard |Source=[[image:Range_of_alto_voice_marked_on_keyboard.svg]] modified. |Date= |Author=myself war
Файл:MiddleC-Keyboard.svgDescriptionMiddleC-Keyboard.svg position of C on a keyboard Source image:Range_of_alto_voice_marked_on_keyboard.svg modified. Author myself war X Permission