Yes, Seeburg advertised that the KT Special had an "ingenious device for
on and off flashing of colored lights behind tambourine and drum heads."
This device consists of a pneumatic operating a light switch, controlled
by a lock and cancel mechanism tubed to 39 (lights on) and 37 (lights
off).

The 39/37 lock and cancel controls the lights inside the bass and snare
drums. These holes control the violin pipes in the Seeburg G, the
original orchestrion for which the G roll was designed. (The flute pipes
are turned on by 29 and off by 27).

In a G roll or 4X roll orchestrion with only one extra instrument, such
as a Seeburg KT or Nelson-Wiggen 4X or 6, holes 29/27 control the extra
instrument, and holes 39/37 are not used. In the KT Special, with only
one extra instrument - a reiterating xylophone - Seeburg took advantage
of this and used them to turn the drum lights on and off periodically in
the music. Evidently, Seeburg thought having them flash in time with the
drum beat would be too much.

The tambourine light is on its own circuit that stays on all the time. It
traditionally had a red light bulb, while the drums had regular bulbs.

In the Seeburg G and other tall keyboard-style Seeburg orchestrions,
each bulb behind the stained glass hangs from its electric cord,
isolating the bulbs from vibration in the piano and permitting them to
last a long time. In the KT Special, the light sockets are mounted on
the inside of the drum shells, and they burn out quite often -
especially the bass drum bulb - due to the shock of the drum beaters
hitting the drum head.

Most KT Specials have the bass drum bulb socket mounted on a metal
plate covering a large enough hole in the drum to permit removal from
the outside of the drum. KT Special snare drums typically have only
one head (the front one), permitting easy access to the bulb from the
back. The earliest model KT Special, in a regular size KT cabinet with
a stained glass eagle, has the same 2-head snare drum as in a Seeburg G,
however, requiring disassembly of the snare drum whenever the bulb
burns out!

Art Reblitz