Review: Faded Instruments Blumen und Pflanzen, Ghost Tones and Slimer FM

Truly original creative tools are not common in the music-making sphere but these quirky plug-ins from Faded Instruments seems to tick all our boxes.

Faded Instruments
When you purchase through affiliate links on, you may contribute to our site through commissions. Learn more.

Price Blumen und Pflanzen £15 Ghost Tones Free Slimer FM £7
Contact Faded Instruments

Native Instruments’ Reaktor is a capable though complex audio workstation. Its toolbox of prebuilt components coupled with its ability to run custom processing code and algorithms makes it a seriously powerful piece of kit and, by allowing anybody to try their hand at creating processors and instruments, Reaktor has given rise to an active community of sound designers who, unrestrained by commercial necessity, are creating some of the most fascinating and unusual processors around.

However, for one member of this community, artist and educator Doron Sadja – who splits his time between Berlin and LA – only being able to share creations with other Reaktor users became frustrating. So, rather than restrict his creations to Reaktor users, he created his own plug-in firm, Faded Instruments. Its mission is “not to make perfect instruments” but to make instruments that “offer new ways of thinking about sound” and, across the company’s initial trio of releases, Blumen und Pflanzen, Ghost Tones, and
Slimer FM, this ethos is on full display.

Faded Instruments Blumen

Look at the flowers

These Faded Instrument plug-ins don’t lend themselves to easy description. That’s especially the case with Blumen und Pflanzen, which means Flowers and Plants in English. This soft-synth has two oscillators, each of which can morph from a sine wave to a square wave with an adjustable pulse width. There are also a couple of controls that introduce a filter zap to the attack portion of an oscillator’s sound, with the intensity and duration of the zap set via a couple of dials on the oscillator’s panel.

Each oscillator has a simple sequencer for triggering notes. The oscillators have a fixed
pitch though, with a dial for setting the desired oscillator frequency, and so all this sequencer does is fire off a new trigger when the current one ends. The X/Y pad above each oscillator is used to control the attack and decay time of the resulting note and, by extension, the rapidity with which the trigger repeats (shorter attack and decay means the trigger repeats more frequently). Alternatively, you can use keyboard keys C3 and C#3 to trigger each oscillator – the attack and decay settings still have a bearing on how the note sounds but now the note will be held until you release the trigger key.

The outputs of the two oscillators are combined using a blend of frequency and phase modulation, and the amount that each oscillator contributes to each modulator is controllable. The central X/Y pad provides further interactive control over how the oscillators modulate one another. The signal chain is rounded off with a resonant filter, with built-in LFO and distortion, and a delay.

The upshot of all of this is an instrument that pumps out rhythmic and counter-rhythmic pulses and throbs, all with the added digital mashing of an over-excited FM/PM modulator. There is no means of syncing the rate of the pulses, LFO or delay with your DAW, which feels limiting but is in keeping with the hands-on and organic nature of the instrument.

Faded Instruments Slimer

You were never really here

Have you ever been near a screeching fire alarm? If so, when the siren was at the threshold of hurting your ears, did you notice a slightly distorted sound between the loud twin tones of the alarm? If you happened to have a microphone and an oscilloscope with you, you’d see that this strange sound doesn’t actually exist. What you’re actually experiencing here is evoked otoacoustic emission, a phenomena created within the inner ear – and the very principle that the Ghost Tones plug-in looks to harness.

When you trigger a note in Ghost Tones by playing a key on your keyboard, the instrument creates a randomly pitched sine wave, along with a second sine wave calculated to create an otoacoustic-emission response through which you will hear the note you played, even though it isn’t actually there. The plug-in has a simple interface that allows you to set the frequency range of the random note, as well the attack and decay time of the resulting sound itself.

This first crop of Faded Instrument plug-ins fall squarely into the quirky and experimental brackets

It sounds astonishing but, unfortunately, we find that it doesn’t really work. At least, not at volume levels that don’t contravene strategic arms-limitation treaties anyway. At any volume that can’t shatter glass, all you hear is a random pair of sine waves, one low in pitch, the other high. Even with the volume cranked to ear-splitting levels,
you can only just hear the effect.

Approached as an example of science in action, Ghost Tones is undoubtedly very fascinating. But we fear it has little scope to be used as a musical instrument because it’s so heavily reliant on specific – not to mention unpleasant and damaging – listening conditions. On the plus side, though, the plug-in is free and certainly worth 10 minutes of your time, if only to learn more about and experience the otoacoustic emissions – if your monitoring is loud enough, that is.

Slime wave

Following the craziness of the other two Faded Instruments plug-ins, Slimer FM seems positively tame. This is essentially a simple two-operator FM/PM synthesiser. What makes it different, however, is that one of those operators is an audio input. Slimer FM’s other operator is a simple oscillator that can go from producing a sine wave
to a saw wave. This operator is modulated by the input signal in the frequency and/or phase domains, and you can blend the amount of each using the FM/PM control. The results are passed through a resonant filter with a dedicated attack/decay envelope generator.

Slimer FM is remarkably easy to use for an FM synthesiser but the sounds it produces rely entirely upon what you feed into the audio input. Interesting effects can be created using drum loops and vocals but sources with lots of tonal complexity result in sounds that are so tonally busy that they approach noise. Still, with some experimentation and fiddling with the set of controls, you can coax fascinating sounds from Slimer FM, albeit sounds that are challenging to make use of.

Never fade away

Taken together, this first batch of Faded Instrument plug-ins fall squarely into the quirky and experimental brackets. Ghost Tones isn’t going to be much use for making music but Blumen und Pflanzen and Slimer FM are capable of interesting and complex sounds that could lead you in interesting directions.

Do I really need this?

Faded Instruments Ghost
It can be difficult to judge the usefulness of off-the-wall plug-ins such as these. For all the sonic interest in the sounds they produce, it can take a certain type of mindset to envisage ways of incorporating such strangeness into a complete piece of music. That said, those who have the necessary thought processes will find tools such as Blumen und Pflanzen, Ghost Tones and Slimer FM as indispensable as the are fascinating.

The developer of these instruments is as much an artist and educator as he is a coder, and this is reflected both in the way the plug-ins encourage user experimentation and in the more than reasonable pricing. Faded Instruments will even provide the plug-ins for free to those who can’t afford them but who can make a case for needing them.

Key features

  • Unorthodox but easy-to-use instruments
  • Purposely and unapologetically imperfect
  • Explore new approaches to FM/PM synthesis
  • Learn about otoacoustic emissions
  • Quirky and fun-looking interfaces
  • Available in VST format for Windows but only AU format for macOS


Native Instruments
Rounds £90

This instrument runs in NI’s Reaktor engine but there’s a free player version of Reaktor that can load instruments like this too. Rounds blends analogue and digital sounds with advanced sequencing capabilities.

Sonic Charge
Synplant £75

The notion of an organic synthesiser is taken to its ultimate conclusion in Synplant, a synthesiser that grows its sounds from seeds. The synth is edited by choosing a source seed, followed by which roots to grow.


Get the latest news, reviews and tutorials to your inbox.

Join Our Mailing List & Get Exclusive DealsSign Up Now

The world’s leading media brand at the intersection of music and technology.

© 2024 MusicTech is part of NME Networks.