The
vertical flute is either (1) a
rim-blown (notched or un-notched)
flute, (2) a
tubular duct flute, with tapered bore or (3) a transversely blown flute,
Giorgi flute, designed to be played in an upright position. The vertical flute is contrasted with the "cross flute" (or "
transverse flute") and "
globular flute", and in stricter usage may refer only to the first category above (Marcuse 1975, 187).