Laser Harp’s mainboard manufacturing process showing SMD pick and place on the bottom side. Laser Harp (www.harpelaser.com) develops light-sensitive musical instruments that are played by moving hands over the laser light sources. MIDI commands are created when the beams are interrupted. The commands can be sent to various electronic devices: synthesizers, samplers, MIDI controllers, etc. SMD pick & place on the top side of their mainboard can be viewed here.