Some of these flutes are double flutes with a conventional transverse flute on one end and a Chinese paper vibrating flute on the other.
(Some of these flutes; are; double flutes with a conventional transverse flute on one end and a Chinese paper vibrating flute on the other)
Some of these flutes
are
double flutes with a conventional transverse flute on one end and a Chinese paper vibrating flute on the other