Western concert flute cases C). Modern flutes may have a longer foot joint, a "B-foot", with an extra key to reach B. From high to low, the members of the concert flute family include: Each of the above instruments has its own range. The piccolo reads music in C (like the standard flute), but sounds one octave higher. The alto flute is in the key of G, and the low register extends to the G below middle C; its highest note is a high G (4 ledger lines above the treble staff). The bass flute is an octave lower than the concert flute,
Members of the western concert flute family is sometimes referred to as a "contrabass flute in G". An instrument in the key of G, pitched a fourth below the contrabass flute in C and two octaves below the alto flute in G; it is sometimes also called a double contra-alto flute. The double contrabass flute (sometimes also called octobass flute) is pitched in the key of C, three octaves below the concert flute (two octaves below the bass flute, and one octave below the contrabass flute). Its lowest note is C, one octave below the cello's lowest C. Despite the tendency of the larger sizes of flute