Building on the worldwide success of the 49-key Osmose, the 61-key version adds an extra octave, giving musicians more room to explore, compose, and perform. Musicians can choose between the original 49-key or 61-key model, depending on their needs and playing style. Beyond the instrument itself, Osmose thrives within a living, evolving ecosystem of software, presets, and community-driven updates, ensuring it grows and improves over time. 

With 61 keys, Osmose 61 offers greater harmonic and melodic freedom, perfect for two-handed playing, complex arrangements, and live performance. It retains everything that made the 49-key model revolutionary: the expressive 3D keybed, MPE integration, high-end interface, and premium build quality—giving musicians the choice to stay with 49 keys or step up to 61. Developed and fully designed by Expressive E, the Osmose keybed sets a new benchmark for MPE instruments. Every note responds with nuance to velocity, press, aftertouch, pitch bend, pressure glide, strum, vibrato, and more —making the keyboard a natural extension of the player’s hands.

EaganMatrix: Always at the Core of Osmose Sound

Powered by the legendary EaganMatrix engine, developed by Haken Audio, Osmose delivers rich acoustic texturesand complex synth soundsthat react intuitively to every gesture. Its versatile engine supports physical modeling, FM, subtractive synthesis, and more, complemented by onboard reverb, delay, compressor, and EQ.With 580 factory presets and up to 2048 preset slots, Osmose offers a complete, performance-ready palette while staying true to the expressive soul of the instrument

All the internal sounds in Osmoseʼs large library are tailor-made to take advantage of its unique keybed. Osmoseʼs unique sound identity is a combination of highly detailed acoustic, electronic, and hybrid sounds that will easily add nuances and variations to any music genre.

These sounds were carefully created to react to a playerʼs slightest movements and make use of the keysʼ three-dimensional sensitivity in a unique way to create effects such as strummed notes, vibrato, legato, layered dynamics, and much more. As a result, discovering and controlling Osmoseʼs sounds is refreshing and fun!

On top of being a traditional MIDI keyboard controller, Osmose can also interface with computers and other instruments as an MPE MIDI controller. It also offers polyphonic aertouch support, a Multichannel MIDI mode, and global pitch bend. All of these changes can be made directly from the Osmose interface, with no need for a computer.

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