Polished Tandem themes and canvases, ready to import.
Drop a file + preview into the repo and the gallery updates automatically. No catalog files, no manual edits.
About Tandem
Tandem is a collaborative MIDI canvas for building custom control surfaces, sharing presets, and syncing multiple performers.
Focus Mode
Precision control for a single component. Ideal for automation, MIDI learn, and quick tweaks while recording.
Canvas Mode
Drag, drop, and build full control surfaces with knobs, sliders, pads, and XY controls. Save layouts as presets for reuse.
Real-Time Collaboration
Sync multiple devices for shared control sessions. Great for live sets, band rehearsals, and studio workflows.
Theme Studio
Swap visuals instantly, import community themes, and export your own palettes for collaborators or clients.
Getting started
Import-ready files with a clean handoff from the Tandem app to the library and back.
1. Download a file
Grab a theme (.tandemt) or config (.tandemc) and keep the preview image for reference.
2. Open in Tandem
Use Files, AirDrop, or share sheet. Tandem can auto-import or ask for approval depending on your settings.
3. Find it fast
Imported themes surface in Theme Manager, and configs appear in the preset manager and settings.
Themes
Visual styles ready for Tandem. Tags are pulled from theme metadata when available.
Canvases & Configs
Workspace layouts and configuration presets for workflows.
Presets & Imports
Everything in the library is designed to import cleanly into the Tandem app with validation and clear metadata.
.tandemc configs
Complete workspace layouts, MIDI mappings, and defaults packaged as human-readable YAML/JSON. Great for sharing full rigs.
.tandemt themes
Color palettes and UI look/feel packages. Import a single theme or a full pack to match a show or studio vibe.
Import flow
Open a file from Files, AirDrop, or a share sheet and Tandem will import it in the background. You can disable auto-import in Settings for manual approvals.
Compatibility checks
Imports are validated on-device with warnings surfaced when data needs attention, keeping your library safe to use.
About the creator
Tandem is designed and built by Mitchell Cohen at Cohen Concepts.
Product vision
Build tactile, expressive MIDI control surfaces that feel great on iPhone and iPad without sacrificing professional depth.
Community first
The Tandem Library curates the best themes and presets so users can share workflows without friction.
Collaboration
Want to contribute? Send a preview + file and we’ll review it for inclusion once it’s tested.
Contact + feedback
Open a GitHub issue with ideas, bug reports, or potential submissions.
About the library
Curated only. Add files to the repo and GitHub Pages rebuilds the gallery automatically.
Created by Cohen Concepts
Tandem is built by Cohen Concepts (Mitchell Cohen) for musicians, producers, and live performers who want hands-on control without limits.
How items are discovered
The build script scans /themes and
/configs, pairs each file with a preview image
(matching slug), and reads optional metadata.
Metadata support
Themes can include metadata.title,
metadata.description, and
metadata.tags. Configs can include
metadata.title and
metadata.description.
Download + source
Download buttons use GitHub raw file URLs, and View Source links point to the file in the repo.
Submission guidelines
This library is curated. Reach out with a preview + file and we can add it to the catalog once it’s tested.