Simple system flute

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The simple system flute or German Flute is an obsolete orchestral instrument that was replaced by the Boehm System flute.

The simple system flute had a cylindrical head joint, and a reverse tapered body. The six main finger holes were heavily undercut to produce even intonation and registration while providing even finger spacing.

There were eight keys: The five of the five-key flute, plus a duplicate F key running along the instrument, and two keys on the foot joint to extend the lower register down to middle C.