Unlike simple chord-sample libraries, Ilya Efimov’s strumming engine allows the user to define chords via the keyboard. The script then strums the individual notes based on the timing of the MIDI input. This enables arpeggiated patterns and rhythmic strumming that follow the user's playing dynamics in real-time.

Efimov, a physicist by training, understood something profound: the human ear forgives imperfection but craves intention . His scripting for Kontakt mapped velocity not just to volume, but to articulation. A soft press gave you a warm, rounded pizzicato . A harder strike introduced the bright, sharp attack of a fingernail. He included realistic strumming patterns, release triggers (the sound of the string stopping), and even fret noise that you could dial in like salt on a dish.