From The Apple Wiki
Sequencer Application Icon.
Sequencer Application. From @ThermalDOE on Twitter.
Sequencer Quit Menu. From @ThermalDOE on Twitter.

This app is an internal app on SwitchBoard. It is not quite sure what it really does. It seems to be present on most 9.x and above builds of SwitchBoard. From the screenshots, we can assume it is a more advanced testing application.