mixer old rotor tool tripod wooden concept control music sound audio button channel table bass equipment instrument pan treble volume build building cement concrete grey industrial machine stir technology electronic knob mixing desk Recording studio tune cd dance disc disco dj effect jockey light Nyberg pary player brick-work bright bucket cement-mixer cement-work cementing construction driven driving electrical electricity empty energy engines machinery maintenance mechanical mix mortar motor movement power powered strength sunlight tools turning work working yellow car cutout isolated transport truck