Thesys is a dynamic MIDI step sequencer designed to provide detailed control over your MIDI devices. It enables the creation of intricate bass lines, vibrant leads, rhythmic chords, and rich pads suitable for both studio production and live performances. Its intuitive interface allows musicians to craft complex sequences with ease, enhancing creativity without the need for deep technical knowledge.

For live performers, Thesys offers extensive performance options accessible directly from a MIDI keyboard. This setup allows users to transpose, manipulate, and transform patterns on the fly, delivering real-time control without interacting with a computer. Various sequencer tracks cover pitch, gate, octave, chord generation, and randomization, enabling musicians to shape their sound with precision and spontaneity.

Additional features include an internal synthesizer for immediate pattern creation, advanced timing and synchronization options, and a comprehensive action section that controls playback speed, looping, muting, and note velocity thresholds. Together, these functions make Thesys a powerful tool for crafting evolving musical sequences with sample-accurate timing and nuanced expression.