A network system is constructed for operating a music apparatus having a
function as an electronic musical instrument under control by a local
terminal which is communicable with a host computer through a network. In
the system, the host computer is installed with a capability utilized to
compute data effective to extent the function of the electronic musical
instrument. The local terminal is connectable to the host computer through
the network to remotely control the capability of the host computer so as
to compute the data prepared for the music apparatus. The local terminal
downloads the computed data from the host computer into the music
apparatus through the local terminal. The music apparatus operates
according to the downloaded data to extend its own function as the
electronic musical instrument. Further, the capability itself can be
transferred from the host computer to the music apparatus through the
local terminal.
