The PAR can is usually the basis of an entertainment lighting system and is suitable for small mobile systems, big tours and permanent installations. A popular portable solution for the mobile DJ or small band is to mount sets of four PAR56 cans on a tripod stand, and use individual birdies (PAR16) and pinspots (PAR36) to light features and mirrorballs.
In larger systems, the 6-lamp bar is common - this consists of six PAR64 long-nose cans mounted on a bar which has a multipin connector wired to either the Socapex or Lectriflex standards. This allows connection to dimming and control systems.
The PAR can in all its various guises forms the basis of practically every entertainment lighting system.