Valvasone Virtual Organ

Valvasone Renaissance Organ

The organ in the gothic church of St. Corpus Christi in Valvasone was constructed by Vincenzo Colombi in 1532–1533. It was located in a balcony on the right wall of the church. The organ case was completed in 1535, and between 1535—1538 it was decorated with carvings done by Girolamo di Venezia and donated by Tommaso Mioni da Udine. The organ was to be further embellished by paintings by Il Pordenone (Giovanni Antonio de' Sacchis), but he died before the work could be finished. After 1539, the paintings were instead completed by Pomponio Amalteo. The doors of the organ case depict scenes from the Old Testament: the Sacrifice of Isaac is on the left wing panel, and the Sacrifice of Melchizedek is on the right wing panel. On the balcony itself, there are scenes from the New Testament.

Various changes to pipes and stops were carried out during the seventeenth through nineteenth centuries. At the beginning of the twentieth century, the organ was no longer playable and was left abandoned.

The first restoration of the instrument occurred during 1972–1974 and was performed by Alfredo Piccinelli. A second restoration by Francesco Zanin followed in 1999. Zanin brought the instrument back to its original Renaissance condition, including the original spring windchest.

The organ consists of a single manual with an unusual (by today's standards) compass of 47 keys (FGA-f3) and a pull-down pedal of Italian style (FGA-d1). The stops form a typical Italian plenum composed of individual principal-scaled ranks. There is also a flute at 4' pitch. The organ has a tremulant, labeled "Fiffaro" under its switch. The organ is winded by three wedge bellows, and the wind pressure is 43 mm (water column measurement).

The organ's pitch is 490 Hz at 18°C. The temperament is meantone.


Encryption, sample quality

The sample set is offered in 48kHz sample set. No encryption, the sample set is available in a plain wave format. The sample set runs in Hauptwerk 4.2 and higher versions.

Reverb time

The reverb time is ca. 3 seconds.

Keyboards, pedalboard

The original compass of the keyboards is 47 keys (F-f3, no F#, no G#), which is extended to 54 keys (C-f3) virtually via a dedicated switch. The original compass of the pedal division is 20 keys (F-d1), extended to 27 keys (C-d1) virtually.


All ranks were recorded with and without tremulants where available for the most convincing tremulant behavior. It is possible to use artificial (waveform) tremulant instead to save RAM (the switch is located on the mixer tab). You can choose to omit some or all of the sampled tremulant ranks when you load the organ the first time.

Special features

The organ was recorded in 5 microphone perspectives in varying distance from the instrument (and various micing techniques), giving vast mixing possibilities.

Tenori stop and the Flute stop were recorded twice with differnt touch speed. Therefore, the tone is different when pressed gently, and different when pressed firmly. To reproduce the effect, MIDI velocity sensitive keyboard is necessary. The split point is set to MIDI velocity value 35.


Screen resolution 1280x1024 px or more.

Polyphony of 2000 voices recommended for the full suround.

Wet, 10-Channel Surround, Full Surround variant

In addition to the Semi-Dry variant, the surround also contains these microphone perspectives:

Front direct channels - capture the sound at moderate distance from the pipes, resulting in relatively direct sound with little reverberation. Note: These samples are different from the semi-dry samples, which are recorded very close to the pipes.

Front diffuse channels - captured at mid distance from the organ, where the sound had an excellent balance of direct and reverberated sound. These channels can be used alone for simple stereo applications, or as a front channels for surround.

Front distant channels - captured at larger distance from the organ, so that the sound appears immersed in the reverberation. These channels can be used alone or mixed with the Front direct channels for more detail.

Rear channels - capture the acoustic response of the church, not the direct organ sound. These channels are good for rear speakers in a surround setup, or can be mixed into a stereo signal for a wetter sound in headphones or other 2-channel setups.

The 10-Channel Surround variant of the model includes the Front Diffuse and Rear channels.

RAM consumption: 10-channel surround

  • 16-bit, other settings default:  10.6 GB
  • 20-bit, other settings default:  16.7 GB (recommended)
  • 24-bit, other settings default:  19.8 GB

In total, there are eight front channels and two rear channels available. In the Full Surround variant, the front and rear audio channels can be mixed or used separately in myriad ways, depending on the preferences of  the user. A dedicated "mixing desk" is available in Hauptwerk to mix the sound  to the desired level of "wetness". Note: To reproduce the surround format, an audio card with at least 4 output channels is required, dedicating front channels  (in any desired blend) for the front speakers, and other  two channels for the rear speakers. 

1. Manuale Ff3 (extended from C-)
Tenori 12' (ext. 16')
Ottava (8')
Quinta Decima (4')
Decima Nona (2 2/3')
Vigesima Seconda (2')
Vigesima Sesta (1 1/3')
Vigesima Nona (1')
Flauto in XV (4')


  • Tremulant (= Fiffaro)

Virtual extensions:

  • All stops are extended to the full bass octave (from the low C).






Console view:

This is the general console view. It serves to define the keyboard MIDI inputs for all the divisions. The active part of this view are the manuals, the pedal. Specifying the MIDI inputs is done by right-clicking on the desired manual or pedal.




Mixer view:

The virtual listening position is adjusted here. The mixer settings can be stored, retrieved, reset. 3 different mixer settings can be stored/recalled any time.
The slider for the pipe coupling makes the effect more prominent (more distuning) when up, or less (when down). If the lowest position, the effect is switched off.
The blower switch should be always on. When off, the wind to the organ will stop and there will be no sound.





Stops view:

All stops of the instrument can be accessed from a single screen. Each stop can be MIDI-learned by right click.





  1. Valvasone, Vol. 1

    Valvasone Semi-Dry and Surround Sample Set. Vol. 1. Full set. Surround sample set, 10 channels, 5 microphone perspectives. Plain wave format. Minimum Hauptwerk version: 4.2. (Also works in all higher versions.)

    To use the sample set, it is necessary that you install also the Vol.0 (free of charge).
    Price: Excl. Tax: €68.00 Incl. Tax *: €82.28 Excl. Tax

    Detail & order

  2. Valvasone, Vol. 0 - Core Media (demo)

    Valvasone Semi-Dry and Surround Sample Set. Vol. 0. Core Media pack. Surround sample set, 10 channels, 5 microphone perspectives. Plain wave format. Minimum Hauptwerk version: 4.2. (Also works in all higher versions.)

    Price: Excl. Tax: €0.00 Incl. Tax *: €0.00 Excl. Tax

    Detail & order