英文關鍵字
action
chord
classic
classical
close
construction
damper
detail
hammer
inside
instrument
keys
layout
mechanical
mechanism
motion
music
object
piano
prepared
string
structure
vintage
英文關鍵字
action
chord
classic
classical
close
construction
damper
detail
hammer
inside
instrument
keys
layout
mechanical
mechanism
motion
music
object
piano
prepared
string
structure
vintage