The E.M. Winston Oboe features a full conservatory system and includes all  keys Ab/Bb, G#/A, Double Ring D#/E, Left Hand C/D, Low B/C# Left Hand F Key that allows the player another option for fingering an F. This key is essential for more advanced players in executing certain assages and in choosing the desired tone color which a forked F might not achieve. 3rd Octave Key allows the player to reach notes above high D with greater ease. The F Resonance Key will help to enhance the resonance and quality of pitch for the F note.