A Revolutionary Expressive Musical Performance Controller

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Meet LinnStrument, an expressive MIDI controller for musical performance.
Unlike the simple on/off switches of a standard MIDI keyboard, LinnStrument's 200 RGB-backlit note pads sense each finger's subtle movements in three dimensions, enabling musical performance expression rivaling that of fine acoustic instruments.

3D Touch Sensing

Electronically-generated sound is typically performed on a MIDI piano keyboard, which is little more than an array of on/off switches. By comparison, LinnStrument captures your subtle finger movements in 3 dimensions:

1) Pressure & Velocity (Z axis): In additional to velocity, LinnStrument senses continuous pressure from the lightest to heaviest touch, permitting fine control over each note's loudness, just like in wind or bowed-string instruments. This is different from a MIDI keyboard's Aftertouch, which starts to send pressure data only after the key is fully depressed and the note is already sounding.

2) Left/right (X axis): These movements are normally used to control pitch. There's no need for bend or mod wheels. To bend pitch, simply slide your finger from one note to another, then wiggle it for vibrato. Smart pitch correction keeps you in tune without limiting your vibratos or pitch slides.

3) Forward/backward (Y axis): This is normally used to provide variation in timbre, for example to vary the waveform of an oscillator, the bow position of a violin or the embouchure of a wind instrument. But it can be assigned to control any MIDI parameter.

These three dimensions are sensed independently for all simultaneous touches. This adds up to an electronic instrument with expressive control approaching that of fine acoustic instruments.

More about musical expression..

How are the notes arranged? Why not a piano note arrangement?

Note locations in 4ths tuning. Click to enlarge.LinnStrument's notes are arranged not as on a piano but rather like a stringed instrument, with eight rows (like strings), each consisting of two octaves of consecutive semitones. Like strings, the rows can be tuned as a guitar or violin or however you like, but most LinnStrumentalists use the default fourths tuning, as on a bass guitar or the lower four strings of a guitar. A good way to think of this note layout is like an 8-string bass.

To make it easy to find the right notes, the naturals (C, D, E, F, G, A and B) are lit, with all the C notes lit in a different color. Alternatively, you can light any scale and in any of six colors.

Why not a piano note arrangement? Because a piano keyboard's non-uniform pitch spacing and rear position of the black keys make it awkward to perform note-to-note pitch slides, an important expressive musical gesture of guitar, violin, sax and most other acoustic instruments. By comparison, the notes on LinnStrument's stringed-instrument layout are evenly spaced and positioned and therefore don't have this problem.

More about piano vs. string layout...

Works with every MIDI synth, and even better with new MPE synths

LinnStrument sends standard MIDI messages over its USB or MIDI output jacks, and is configured by default to work out-of-the-box with every MIDI sound generator in existence, polyphonically and with the advantages over a MIDI keyboard of performed vibrato and note-to-note pitch slides.

Includes MPE sounds for&Includedfree8 TrackFor fully polyphonic 3D control, you'll need a synth that is compatible with MPE (Multidimensional Polyphonic Expression), a new MIDI standard for connecting expressive controllers and synths over standard MIDI. It's already supported in quite a few major software instruments. We even include a free sounds file for Apple's MainStage and Logic, plus a free license for Bitwig 8-Track, all of which are MPE compatible.

More about LinnStrument's smart MIDI...

What it's like to play LinnStrument

LinnStrument's 200 note pads are spaced 19 mm apart--just like the average spacing of fingers--with a shallow trough between the pads so you can feel where the notes are, but easily slide across them for pitch bends. The surface is soft but not so soft as to feel squishy when playing fast rhythmic parts. It senses very light touches, similar to the minimum force required to play a MIDI keyboard.  And you can play it on a flat surface, but at only 22.5 inches long, 1 inch thick and 5 pounds, you can use the included guitar strap pins to play standing up.

Addictive live performance features

3D Swing Arpeggiator - LinnStrument's built-in Arpeggiator responds to all 3 dimensions of movement for entirely new ways of beat-synced play, always in sync to your DAW. The Replay All mode creates chordal rhythms merely by varying chord pressure, like the Roll feature of drum machines, and also works great for creating beats, as shown in the above video.

Split Keyboard / Strum mode - You can split the keyboard to play two different sounds, and adjust the split point as you like. You can even use one split as eight strings to strum notes fingered on the other split, just like a guitar, as demonstrated in the video above.

CC Faders mode - Using the Split Keyboard, you can use either split as eight horizontal Control Change faders. Control eight sound parameters in real time as you play.

Low Row - The lowest row of pads can be reassigned to a variety of live performance control modes, conveniently placed for thumb control while fingering notes on the other seven rows. Use it as a Sustain Pedal, a Modulation or Bend strip, to momentarily enable the Arpeggiator (sliding your thumb to vary its rate), to restrike a fingered chord, or even as a 3D control strip, modulating three parameters at once.

Easy to use

LinnStrument is easy to use. with all settings available on the front panel. So there's and no need for a computer-hosted editing app. To get started, simply connect LinnStrument via USB to your computer, load your favorite MIDI sound software and play. There are no computer drivers to worry about.

The Ultimate LED Grid Controller

While LinnStrument excels at playing notes, it's also incredible for controllerists. Imagine having access to 200 drums, samples, clips, loops, or sequences, and simultaneously controlling the volume, pitch and filter frequency with one finger.   All the expected MIDI hooks are there.

Open Source software so you can customize everything

We realize that creative musicians will want to use LinnStrument in a variety of unexpected ways, so we've released the entire software as open source, permitting you to customize everything. It's based on the popular ARM-based Arduino Due Platform. Simply download our source code to the free Arduino editor, write your feature and load it into your LinnStrument.

Join the revolution

A growing number of people feel as we do, that the next revolution in electronic music performance is Multidimensional Polyphonic Expression instruments like LinnStrument or others. Once you've experienced the power and beauty of 3D expression, it's very difficult to go back to playing on/off switches.

We invite you to join the revolution.

Roger & LinnStrument software creator Geert Bevin

Roger Linn Design  •  Berkeley, CA, USA

Roger Linn Design  •  Berkeley, CA, USA