The octave key is a key on a saxophone or oboe which raises the pitch of all notes by an octave when pressed. It is positioned next to the left thumb on the saxophone; the modern oboe has two, often interconnected, the one for E5 to G#5 near the left thumb, and the one for A5 to C6 to the right of and above the front keys, depressed by the edge of the left index finger. The bassoon has similar keys used by the left thumb, but these are usually only depressed at the attack of notes, or "flicked". The presence of this key is one of the main features which makes the saxophone easier to play than the clarinet, because the same fingerings can be used for two different octaves. The analogous key on the clarinet, the register key raises the pitch by an interval of a twelfth (19 semitones), making the fingerings different for low notes and high notes that are an octave apart. Saxophones of different sizes play in different registers. ... Modern Oboe The oboe is a musical instrument of the woodwind double reed family. ... In music, pitch is the perception of the frequency of a note. ... In music, an octave (sometimes abbreviated 8ve or 8va) is the interval between one musical note and another with half or double the frequency. ... A Fox Instruments bassoon; view detail. ... A bass clarinet, which sounds an octave lower than the more common Bâ™­ soprano clarinet. ... Fingering, also called fingerbanging or finger fucking is the practice of stimulating the vagina or anus of a sexual partner by inserting the fingers, and is a common form of mutual masturbation. ...