apparatus
artists
audio
bass
border
broadcast
build
button
channel
club
concert
control
disk
display
engineering
equipment
group
guide
industry
instrument
keyboard
line
listen
mechanism
model
monitor
music
musician
night
panel
player
radio
record
recording
remote
rock
shellac
software
sound
stereo
studio
switch
technology
the
transfer
transmission
transmit
variety
volume