XJ believes that music is human. Yet, we seek to innovate what’s possible. XJ is a patented system, a new algorithmic medium, cultivating a new school of cutting-edge musicians putting it to work.

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Next-level Adaptive Music Engine

Dedicated to Adaptive Music

Dedicated to Adaptive Music

Unlock Composers’ Full Potential with Specialized Tools

Traditional tools like Wwise, FMOD, or Metasounds are not specifically designed for music composition, often leading to a fragmented workflow. XJ provides a dedicated environment tailored to composers, streamlining the creation and implementation process. This not only enhances creative freedom but also ensures a seamless handoff to developers, reducing integration time and costs.

Designed for an Open World

Designed for an Open World

Revolutionize Game Music with Dynamic, Open World Scores

Instead of creating isolated tracks for specific scenes, XJ empowers composers to craft dynamic scores that evolve throughout an open game world. This capability allows for richer, more immersive audio experiences as thematic elements adapt in real-time to the player’s environment and actions, enhancing the overall game narrative and player engagement.

Clear Display of Musical Elements

Clear Display of Musical Elements

Boost Efficiency with Intuitive, Vertical Timeline Displays

The XJ music workstation features a unique vertical timeline that offers a clear, comprehensive view of all musical elements. This intuitive design enhances navigation, readability, and overall workflow efficiency, enabling composers to work more effectively and produce higher-quality music.

Continuous Flow

Continuous Flow

Maintain Perfect Musical Timing with Continuous Flow Technology

XJ ensures continuous and seamless transitions between musical segments by understanding and managing musical meters and tempo changes. This capability maintains a coherent and engaging audio experience, crucial for maintaining player immersion in dynamic game environments.

Aleatory Capabilities

Aleatory Capabilities

Enhance Gameplay with Innovative Aleatory Musical Tools

XJ supports traditional looping while offering aleatory tools that introduce variability and spontaneity in game music. This feature allows composers to create more diverse and dynamic soundscapes, keeping the gameplay experience fresh and engaging for players.

Seamless Integration

Seamless Integration

Simplify Implementation with Seamless Developer Integration

XJ music minimizes the traditional back-and-forth between composers and developers, streamlining the implementation process. The dedicated XJ runtime engine, built in C++ for optimal performance and portability, allows developers to use the exported XJ music project verbatim. This seamless integration reduces costs, saves time, and ensures high-fidelity audio implementation.


Charney Kaye

Founder. Product & Software Lead.

Lifelong hacker, computer programmer, and electronic music producer who has been passionate about the realization of XJ music for over two decades.

Jamal Whitaker

Co-founder. Content & Music Manager.

SF-based music producer and student of sociology who has collaborated with hip-hop legends, drawing upon lifelong experience in African and Brazilian drum circles to deliver unique beats from diverse styles.

Mark C. Stewart

Co-founder. Music Director.

NYC-based multi-instrumentalist, session musician, and composer. Raised by classical musicians and schooled at Berklee College of Music, Mark seeks out common threads in all musical language.

Ian Hersey

Co-founder. Music Director.

Audio engineer and musician living in Brooklyn, NY. He has mixed or produced almost a hundred records, for artists including Lip Talk, Nasimiyu, Twinsmith, Sun Parade, And the Kids, Super Yamba Band, and Superhuman Happiness. He has a washer/dryer and cooks Sichaun food.


Philip Z. Kimball

Trademark & Copyright Law.

Lifelong musician who brings over a decade of litigation experience ranging from prosecuting consumer protection to copyright of musical property.

Michael J. Feigin

Patent Law.

Received extensive training from patent attorneys and veterans of the AT&T patent department, with over 150 patents issued including software and technology patents, medical patents, mechanical patents, some electrical patents, and other fields includes chemical and design.

Dave Cole

Music Strategy.

NYC-based multi-instrumentalist, session musician and producer. Schooled at Berklee College of Music, Dave is relentless in the pursuit of excellence.

U.S. Patent 10,446,126

US Patent 10,446,126 describes a technology that creates unique, never-ending musical compositions. This technology could transform music production and consumption, particularly in the digital space.

What it is: This technology system generates unique, endless music compositions. It uses a library of partial musical documents and groups of audio samples provided by musicians. The technology uses this content to generate new, never-repeating musical compositions.

How it works: The technology starts by reading a library of musical content. It creates a new chain (a series of musical segments) from this content. It selects sequences (partial musical compositions) and matches them with appropriate instruments (groups of audio samples). Then it uses algorithms to determine the final arrangement and modulation (changes in pitch and tone) of the source audio to create a stream of unique audio data. This process can create an unlimited number of segments, each building and evolving from the preceding segments.

What it’s for: This system could be used in a Digital Audio Workstation (DAW) to enable artists to create endless musical compositions. Unlike a traditional static record which plays from beginning to end finitely, these compositions would perpetually change and evolve without ever repeating the same musical output. It opens up new possibilities for creating and experiencing music, with potential applications for live streaming, music-sharing platforms, and even music therapy.

In essence, this technology leverages partial musical compositions, instrument samples, and mathematical algorithms to create an ongoing, unique musical experience.