# ADDAC Systems — ADDAC-207 Quantizer - [Manual PDF](../../manuals/ADDAC_207_Quantizer_REV05.pdf) --- [ADDAC207 Intuitive Quantizer User’s Guide (PDF)](https://www.addacsystem.com/sites/default/files/files/ADDAC207%20Intuitive%20Quantizer%20Users%20Guide%20REV05.04.2021.pdf) # How to Use the ADDAC207 Intuitive Quantizer to Create Full-Length Eurorack Songs Creating jams or short loops in Eurorack is a blast—but ‘songifying’ a patch is a different challenge! The ADDAC207 Intuitive Quantizer is a powerful tool that, when used creatively with other modules, can help build dynamic, evolving, and structured full-length modular songs. Below is an analysis and some concrete ideas for leveraging the ADDAC207 in more “compositional” ways. --- ## Key Features of the ADDAC207 for Song Structure - **Four independent quantizer channels (“voices”)** Quantize up to four separate CV sources, which can be used for melody, harmony, bass, or other lines. They can share a scale/key or work independently. - **User-definable & recallable scales, user presets** Switch musical keys, scales, or microtuning on the fly or via CV, ideal for structured pattern changes (verse/chorus/bridge). - **Assignable CV input for menu control** Morph scales, change quantization type, transpose, alter gate lengths or trigger repeats—all dynamically with external CV for performative and automated changes. - **Keyboard mode** Use the front-panel buttons as a playable mono keyboard or chord trigger, great for hands-on performance sections. - **Chord generation via interval assignment** Assign fixed intervals (thirds, fifths, sevenths, etc) to other voices for instant harmonization and chord sequence changes. - **Preset system** Rapidly recall entire quantizer states. --- ## Song-Building Techniques & Patch Ideas ### 1. **Use Presets for Sections (Verse/Chorus/Bridge, etc.)** - Save scales, intervals, and gate settings for each section into different ADDAC207 presets. - Use the assignable CV preset change (assign CV to Preset switching) and trigger with a sequencer, LFO, or footswitch to move through song sections. _**Patch Idea**_: Use a stepped CV sequencer to send different voltages to Preset CV input at each song section. ### 2. **Automate Scale and Key Changes** - Assign your transpose input or scale CV assignment to an external sequencer for algorithmic/acoustic 'modulation'. - For key modulations (e.g., up a fourth or down a minor third for bridges), use a precision adder/offset or sequencer to drive the transpose input. - Use the microtonal features for special sections (e.g., an "otherworldly" bridge). ### 3. **Chord Progressions and Harmonic Evolution** - Use one sequencer or random CV source for voice 1 (root), and assign intervals (third, fifth, seventh) to voices 2–4 for auto-harmonizing chords. - Change intervals ‘live’, with assignable CV or gate. For example: - Verse: Voice 2 = third, Voice 3 = fifth - Chorus: Voice 2 = fifth, Voice 3 = seventh—switch with CV. - Combine with a trigger sequencer to ‘revoice’ chords. ### 4. **Dynamic Arrangement Through Quantization Types** - Use the “Ignore” mode (quantize only when in scale), “Above”, or “Below” to change melodic feel. - Assign CV to Quantization Type and automate changes (for example, verse is “Above”, chorus is “Ignore”). ### 5. **Complex Phrasing and Rhythmic Variation** - Vary Gate Lengths (per section or per voice) via remote control. - Set up voice inputs to quantize only on incoming gate/trig—combine with rhythmic trigger sequencers or envelope generators for note density control. ### 6. **Create Evolving Melodic Lines or Riffs** - Use slow, phased, or modulated random LFOs/sequencers for melodic motion into the quantizer, but recall new scales/presets over time to radically shift feel. - Send clocked random or vector generators into voice 1 for semi-generative melodies, then evolve them by shifting scale or intervals. ### 7. **Performative Approaches** - Use Keyboard mode to directly ‘play’ in melodies/chords for solos or live overdubs. - Combine with a looper or sampler module to record/resample generated motifs for classic “build and release” songwriting. ### 8. **CV-Scene Automation with Other Modules** - **Sequencers** (e.g., Stillson Hammer, Eloquencer, Metropolis) - Sequence ADDAC207’s Preset or Assign inputs for hands-off song structure changes. - **Switches/Matrix Mixers** (e.g., Doepfer A-150, XAOC Warna) - Route different CV sources into the quantizer at different song sections. - **Random/Generative Modules** (e.g., Turing Machine, S&H) - Feed evolving voltages, then steer the musical sense with scale/preset changes. - **CV Recorders** (e.g., 4ms Looping Delay, Disting EX) - Record dynamic assign CV motions for playback and repeatable ‘song’ automations. - **Clocked LFOs/Euclidean Rhythms** for evolving trigger/gate patterns. --- ## Example Workflow for a Full-Length Song 1. **Intro**: Use a narrow scale/preset with long gates and slow random CV into one channel for an ambient start. 2. **Verse**: Switch to a full major/minor scale via preset, assign trigger/gate inputs to quantize melodically, use two or three voices for chords. 3. **Bridge**: Morph the scale (harmonic modulation), increase intervals (stack chords more densely), or invoke microtonality. 4. **Chorus**: Wider scale, more harmonies (activate all 4 voices in chord mode), faster gate lengths. 5. **Breakdown**: Change quantizer to “Ignore” type for sparse melodic lines, perhaps switch to Keyboard mode for live play or silence voices for a moment. 6. **Outro**: Return to initial scale/preset or dramatically modulate to an unexpected one for a twist ending. All section changes can be pre-programmed by using a CV preset controller (e.g., via a sequencer or even manually), keeping your patch intact while the underlying musical structure evolves. --- ## Tips - **Plan Scenes**: Decide what scales/modes/interval combos you'll use for different sections before you start the patch. - **CV Animate Everything**: The more you control via assignable CV, the more 'song-like' your modular set will become. - **Presets are Key**: Use all 11 presets—each can be a scene, moment, or song section. - **Sync Everything**: Use a master clock and/or reset signal to keep changes and patterns in line. --- For even more ideas and automation tools, check out eurorack utilities that can create programmatic or performable “scene” or “macro” control over multiple CV destinations. --- [Generated With Eurorack Processor](https://github.com/nstarke/eurorack-processor)