# Expert Sleepers — ES-9 - [Manual PDF](../../manuals/es9_user_manual_1.3.pdf) --- [Download the ES-9 v1.3 User Manual (PDF)](https://expert-sleepers.co.uk/downloads/es9usermanual_v1.3.pdf) --- # Expert Sleepers ES-9: Creating Full-Length Eurorack Songs The Expert Sleepers ES-9 is a powerful audio interface tailored for Eurorack environments, combining multichannel audio I/O, robust internal mixing, and flexible MIDI connectivity. While its primary role is often as a bridge to a DAW (Digital Audio Workstation) or iOS device, careful use of its features can play a key part in composing, structuring, and performing complete modular songs. Below, I’ll analyze features from the manual and propose creative strategies—especially for arranging and structuring full-length songs when integrated with other modules. --- ## Key Features & Their Musical Value ### Multichannel Audio Input/Output - **14 DC-coupled inputs / 12 outputs (8x 3.5mm DC-coupled, 2x balanced)** - **USB audio interface (16 in / 16 out)** - **Mixers, busses, flexible routing** **How this Helps:** Route multiple voices (e.g. basslines, lead, percussion, effects, CV) into individual DAW tracks or sum and remix inside the ES-9, allowing you to record and automate multiple stems for advanced song arrangement. ### Internal Mixers & Routing - **Two 8x8 mixers (if S/PDIF is disabled)** - **Routing between physical IO, USB, busses, and mixers** **Song Structuring Tricks:** - **Dynamic Song Parts:** Mute/unmute mixer channels, swap between two saved configurations (hosted/standalone), or use MIDI to fade/move sounds between parts (intro, drop, breakdown, etc). - **On-the-fly Remixes:** Change what is sent to the main/phones/aux outs—e.g., drop out the kick, boost the reverb return, add new timbres. ### Scene/Configuration Switching - **Push-hold main knob switches between two pre-saved configurations** **Arrangement Use:** Instantly switch between two entire routing/mixing setups—perfect for toggling between "A" (e.g., verse) and "B" (chorus/breakdown) patterns for live sets. ### MIDI CC Mixer Control - **Remote mix automation from a MIDI controller/sequencer** - **Up to 64 CCs for fader/pan/level control** **Practical Uses:** - Use an external MIDI sequencer (e.g., Arturia Beatstep Pro) to mute, solo, or fade in/out stems over a song’s timeline. - Program pattern-based scene changes by sending CCs for arrangement (e.g., silent breakdown, FX send bursts, complex transitions). ### DAW & Hybrid Workflow - **Tight integration with DAW/iOS for multitrack I/O** - **Immediate resampling and live capture** **For Full Songs:** - Record modular stems in the DAW, arrange/copy segments, add effects, and then, if desired, send back to modular for hybrid performances or reprocessing. - Automate ES-9’s mix via your DAW, essentially treating the modular setup as a DAW-recallable instrument. ### S/PDIF Digital & Headphone Out - **Digital expandability; independent headphone cueing** **Use for Structure:** - Route a special element (click track, cue mix) to headphones only—practice transitions, monitor a sidechain beat, or solo elements for performance. --- ## Practical Song Arrangement Techniques with the ES-9 #### 1. **Modular Song Mode Swapper** - Save two radically different routings/mixes: - **Config 1:** Standard groove/verse structure. - **Config 2:** Add/drop voices, reverb wash, FX, or switch to a breakdown. - Use the push-button to fluidly shift between these during a live set. #### 2. **MIDI Scenes & Automated Mixing** - Set up MIDI CC sequences to: - Gradually transpose synth voices. - Mute or fade percussion. - Send CV/LFOs to modulate pan/level of voices in time with the song. - Use an external MIDI sequencer or DAW to automate structure, “playing” your mix and transitions live or from pre-programmed clips. #### 3. **Hybrid Sequencing** - Sequence voices in the modular. - Multitrack record into DAW via ES-9, edit/cut/paste to form structure. - Route DAW tracks back to modular for real-time filter/EQ/FX via ES-9, recompose, and re-record for a hybrid electroacoustic feel. #### 4. **Performance-Ready Live Sets** - Assign: - Background textures and evolving pads to one mixer. - Percussion/bass to another. - Alternate between “mix blocks,” use ES-9’s routing/summing to crossfade, perform drop-ins, or quickly mute/unmute entire voices without repatching. #### 5. **Advanced Song Evolution** - The ES-9’s internal EQ, DC offset, and mix smoothing can be modulated live or via MIDI, meaning your mix can evolve in character (more saturated, filtered, etc.). - Use mix smoothing to avoid clicks/pops during abrupt changes, ensuring pro-sounding transitions. --- ## Example Song Structure Workflow 1. **Build Modular Patch**: Multiple voice generators and sequencers patched into ES-9 inputs. 2. **Record Modular Jam via ES-9**: Capture stems to DAW, improvising with muting/mixer controls. 3. **Arrange in DAW**: Chop, repeat, and move sections for song length. 4. **Automate Mix (Optional)**: Use DAW or MIDI controller to morph the song—fading out the bass, isolating the melody, layering FX, or morphing the structure. 5. **Bounce to Stereo**: Play back through ES-9, reprocess with filters/FX, or perform on stage, using configuration switching for bold changes. --- ## Integration Ideas with Other Eurorack Modules - **Switches/Sequential Switches**: Use with ES-9 mixers for stepping/bursting between sound sources. - **Sampler/Looper Modules**: Sample phrases, then remix and re-perform sections through ES-9. - **Function Generators/LFOs**: Modulate mixer channel levels for organic, evolving arrangements. - **Logic/Trigger Modules**: Program automated scene changes, or even patch triggers to send MIDI through breakout, interacting with external gear. --- ## Conclusion The ES-9 isn’t just a transparent digital I/O—it’s a compositional and performative tool, able to structure and morph full-length modular tracks via mixing, MIDI, and hybrid workflows. Its flexibility enables you to "play the song" just as much as any voice or sequencer modules in your rack. --- [Generated With Eurorack Processor](https://github.com/nstarke/eurorack-processor)