This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Range of tenor voice marked on keyboard.svg Author real name Artur Jan Fijakowski Tenor's range can extend to pl WarX commons WarX mail mailto warx gmail jabber WarX jabber org irc irc freenode net Zasig gosu Tenor zaznaczony na klawiaturze fortepianu Range of tenor voice marked on piano's keyboard Registro vocal de un tenor marcado