The specification of the organ is the choice of sounds that determine the tonal complexion of the instrument (sometimes this is referred to as the stop list).  This gives the greatest clue as to how the finished organ will sound.  The specification is developed over several revisions with the organbuilder, organist and committee collaborating to come up with a finish project that will serve the particular needs of the congregation.  Because each organ is custom-designed, there is a certain amount of “starting from scratch” each time an organbuilder designs a new organ.  One of the first steps in this process is for the committee to articulate the needs for their new organ (see below under “Role and Function of the Organ at Ladue Chapel”).

The organ specification is akin to a painter’s palette in that it lists the various sound color possibilities of the organ and gives an indication of how the colors can be mixed and matched to arrive at a seemingly endless spectrum of tone.  Our new organ was designed keeping the various needs of accompaniment in mind:  choirs, soloists, instrumentalists, and most importantly, the congregation.  As a result, it will be an accompanying tour de force, with nearly every pipe under expression.  This will enable the organist to have a boundless array of tonal colors available at every dynamic level, from a roaring full Swell, to a solo Tuba, to warm and rich foundations, to colorful flutes, to echo strings that will fade away to a whisper.

The Schoenstein design team had quite a challenge to find room for everything our moderate-sized organ needs, due mainly to limited chamber space and the desire for some large pipework.  The design calls for the majority of the pipes to be located in the existing chambers, with new cantilevered cases standing on the east and west walls of the chancel.  Every bit of available space has been utilized, with the 12 longest pipes of the 16′ Pedal Open Wood resting horizontally on the floor behind the last row of the choir!  The Gallery Organ will be renamed Echo Organ, and the existing facade will be retained.   Behind that, 3 new ranks of pipes will be added, and 1 existing rank of pipes (the 8′ Chimney Flute) and the Chimes (a legacy from the church’s original Kilgen organ) will be retained.  There will no longer be any pipes on the south wall of the chancel, restoring the beautiful stained glass window as a focal point.  The finished project is a marvel of engineering, as Schoenstein even found room for a full-length 32′ pipe!

cropped-revised-casework-6-18-14.jpgHere, then, is the final specification for Opus 167:

(note that the numbers refer to the length of the lowest pipe of each rank or set of pipes.)

Three Manual and Pedal Organ

40 Voices — 46 Ranks

Electric-Pneumatic Action

GREAT (Manual II – Enclosed)

16′       Contra Salicional

8′         First Open Diapason (unenclosed)

8′         Second Open Diapason

8′         Harmonic Flute (unenclosed)

8′         Salicional (extension)

8′         Bourdon

4′         Principal

4′         Silver Flute

2 2/3′  Twelfth

2′         Fifteenth

1 1/3′   Mixture (III-IV)

8′         Tuba (Choir)

8′         Clarinet (Choir)

            Chimes (Echo)

SWELL  (Manual III – Enclosed)

16′       Bourdon

8′         Horn Diapason

8′         Traverse Flute  (Stopped Diapason Bass)

8′         Flutes Unison  (8′ Traverse Flute and 4′ Harmonic Flute playing unison pitch)

8′         Stopped Diapason (extension Bourdon)

8′         Gamba

8′         Gamba Celeste

8′         Erzähler  (Stopped Diapason Bass)

8′         Erzähler Celeste (TC)

4′         Gemshorn

4′         Harmonic Flute

2′         Fifteenth (extension Gemshorn)

2′         Mixture (III-IV)

16′       Contra Fagotto

8′        Trumpet

8′         Fagotto (extension)

8′         Oboe Horn

CHOIR (Manual I – Enclosed)

8′          Dulciana

8′          Unda-Maris

8′          Concert Flute

8′          Lieblich Gedeckt (Concert Flute Bass)

4′          Fugara

4′          Concert Flute (extension; Lieblich Gedeckt treble)

4′          Lieblich Gedeckt (extension)

2 2/3′    Twelfth  (extension Nineteenth)

2 2/3′     Nazard (extension Lieblich Gedeckt)

2′           Harmonic Piccolo

1 3/5′      Tierce

1 1/3′      Nineteenth

8′            English Horn

8′            Clarinet

16′          Bass Tuba (extension Tuba)

8′            Tuba

               Chimes and Zimbelstern from existing organ

ECHO (Enclosed — Floating)

8′          Chimney Flute (existing)

8′          Voix Sérénissime

8′          Voix Céleste

4′          Chimney Flute (extension)

4′          Voix Sérénissime (extension)

4′          Voix Céleste (extension)

8′          Vox Humana

PEDAL(Unenclosed)

32′        Acoustic Bass (resultant)

16′        Open Wood

16′        Contra Salicional (Great)

16′        Bourdon (Swell)

8′          Principal

8′          Flute (Great Harmonic Flute)

8′          Salicional (Great)

8′          Horn Diapason (Swell)

8′          Stopped Diapason (Swell)

8′          Dulciana (Choir)

4′          Fifteenth (extension Principal)

4′          Flute  (Great Harmonic Flute)

4′          Flutes Unison (from Great Silver Flute, Swell Traverse Flute, Swell Harmonic Flute and Choir Concert Flute)

32′       Contra Fagotto (extension Swell Fagotto)

16′       Bass Tuba (Choir)

16′       Contra Fagotto (Swell)

8′         Tuba (Choir)

8′         Fagotto (Swell)

4′         English Horn (Choir)

4′         Clarinet (Choir)

            Chimes (Choir)