June 2026Live Checkout and Drum Arranger Positioning
TrackTuner moved into live checkout, repositioned Drum Arranger as the primary product and tightened frontend copy around credits, MIDI exports and production workflow.
What's New
- Enabled Lemon Squeezy live checkout for 3, 5 and 10 credit packs.
- Repositioned the homepage around Drum Arranger, drum MIDI, fills, transitions and groove variation.
- Added a global footer with About, Changelog, Privacy, Terms and Refund Policy links across the frontend.
- Added an internal Admin DSP Control Panel for live Drum Arranger tuning.
- Reworked Dashboard and Billing copy around credits, downloadable MIDI files and Drum Arranger-first product order.
- Added Lemon Squeezy purchase-history and receipt access from Billing.
- Added TrackTuner product imagery to credit pack cards to match the Lemon Squeezy product presentation.
- Updated homepage hero imagery, reused DAW editing visuals across arranger pages and tightened Billing product image sizing.
- Added small DSP and MIDI badges to homepage and module pages where the copy explains analysis and MIDI output.
- Replaced the homepage hero image with an autoplay Drum Arranger video and updated arranger version labels to v4.
- Aligned Song Arranger workspace and I/O rack layout more closely with the Drum Arranger framework.
- Reordered Drum Arranger so the I/O rack appears before the TR-90 preview machine.
- Aligned Drum Arranger rack framing, brand header and FAQ structure with Song Arranger.
- Fixed Song Arranger MIDI export so DAW imports follow the same visible sketch sections, including empty suggested slots.
- Updated Song Arranger and Drum Arranger DAW reference images with product-specific MIDI import screenshots.
- Simplified EDM Song Arranger suggested flow into larger A/B-style macro sections instead of exposing every 4-bar peak window as a separate drop.
- Extended simplified Song Arranger macroflow mapping to Pop, Trap/Hip-hop and Singer-songwriter styles.
- Added Song Form guidance to the Rearranged Sketch panel and simplified credit messaging across arranger pages.
Improvements
- Updated billing and access copy from provider-review placeholders to live credit purchasing.
- Fixed live checkout buttons to use Lemon Squeezy share checkout URLs.
- Changed free-trial messaging away from preview-length language toward the current free-credit model.
- Changed authenticated navigation to expose Dashboard directly and moved Billing into the credit action area.
- Added MIDI file icons to Billing and arranger download panels to make downloadable outputs easier to recognize.
- Added clearer Song Arranger education around listener response, tension, release and structure.
- Added Drum Arranger differentiation around track-first drum MIDI instead of loop-pack browsing.
- Separated Drum Arranger DSP section detection from Song Arranger section logic.
- Kept Drum Arranger as a standalone original-audio DSP workflow for break, build, drop and groove decisions.
- Fixed long Drum Arranger break sections so adjacent 4-bar break windows stay silent until the final exit fill.
- Improved Drum Arranger break detection with bass-impact continuity and added alternating snare behavior in normal sections.
- Removed plugin beta IP whitelisting in favor of plugin-side demo access controls.
Deployment
- Backend production environment updated with live Lemon Squeezy product IDs and webhook secret.
- Webhook signature verification confirmed against the live API endpoint.
- Frontend production deployments confirmed on Vercel.
- Key commits included 0c6c2bb, 68ef3f7, 8103037 and 8a83e09.
What's New
- Song Arranger v4 released with genre-aware structure logic.
- Drum Arranger v3.1 released with transition, fill and break engine updates.
- Added Finish Instructions for DAW rebuilding workflow.
- Added blank section suggestions for missing Pre-Chorus, Build, Bridge, Break and Hook sections.
- Added redundancy detection for repeated verses, drops and hooks.
Improvements
- Preserved detected section bar lengths from analysis through suggested flow.
- Kept Arrangement MIDI and GUI sketch on the same bar and time model.
- Layered fills on top of groove instead of replacing the groove.
- Kept Drum Arrangement MIDI deterministic for the same input and style.
- Improved source-section mapping for rearranged audio sketches.
Fixes
- Fixed arrangement output rendering at roughly half length in GUI and Arrangement MIDI.
- Removed modulo-based break behavior from Drum Arranger.
- Prevented silent break bars caused by local bar index rules.
- Protected transition bars from mechanical groove stops.
- Deployment: commit 6d5b2af.
What's New
- Added proprietary unified DSP engine explanation to the homepage.
- Added Song Arranger DSP behavior section to the module landing page.
- Added Drum Arranger shared-engine section to the module landing page.
- Added architecture-focused About page sections for the music engine.
Deployment
- Frontend production deployment confirmed on Vercel.
- Deployment: commit 9dc7980.
What's New
- Added Arrangement MIDI download flow for Song Arranger.
- Added analysis completion modal with direct Arrangement MIDI download.
- Repositioned homepage, module pages, billing, terms and policy pages around DAW workflow exports.
- Added creator-focused About page content and practical workflow notes.
Improvements
- Reduced analysis-heavy wording across the product.
- Clarified that exported MIDI contains structure and workflow information, not generated audio.
- Improved module landing page visuals for Song Arranger and Drum Arranger.
Deployment
- Frontend deployment prepared for the release-hardening production branch.
- Commits included c6fafe1 and 1ca00dd.
What's New
- Released Song Arranger v3 with modular rack-style presentation.
- Released Drum Arranger v3 with expanded ten-instrument drum mapping.
- Added style selectors for Song Arranger and Drum Arranger.
- Added Original versus Sketch comparison for Song Arranger.
- Added TR-90 inspired Drum Arranger workflow, arrangement matrix and sequencer view.
Improvements
- Expanded drum variation across groove, fills, hats, ghost notes and velocity.
- Improved break, bridge, drop and build section behavior.
- Improved upload, timeout and credit-status messaging.
- Fixed Drum Arranger upload failures and hi-hat preview behavior.
Deployment
- Frontend and backend changes were prepared for production hardening.
- Key commits included 9c06ed5, 978b74c, 10ad5a1 and 57a073d.
What's New
- Added dsp_engine_v2 as the shared audio analysis layer.
- Standardized 4-bar window segmentation from BPM and time signature.
- Added shared features for RMS, spectral centroid, bandwidth, flux, onset density, peak density, MFCC and chroma.
- Added clustering and section classification for intro, verse, build, drop, break, bridge and outro behavior.
Improvements
- Aligned section names between Song Arranger and Drum Arranger.
- Aligned bar lengths, intensity, cluster data and playhead mapping.
- Added TR-90 segment playback and I/O rack workflow.
- Improved pre-flight tempo guidance for Song Arranger uploads.
Deployment
- Commit 50a3802 introduced the shared DSP v2 engine and TR-90 drum workspace.
- Commit e3adcf5 fixed TR-90 segment playback and added the I/O rack.
What's New
- Released Song Arranger v2 arrangement intelligence.
- Added energy movement, repetition similarity, contrast and impact modeling.
- Improved section precision for intro, verse, pre-chorus, build, drop, break, bridge and outro.
- Removed mix and mastering analysis from the arrangement workflow.
Improvements
- Cleaned prompts to stay arrangement-only and JSON-strict.
- Removed deprecated module references from frontend and backend surfaces.
- Improved module naming around Song Arranger and Drum Arranger.
Deployment
- Commit 0a29867 delivered Song Arranger v2.
- The release-hardening branch became the main production path.
What's New
- Renamed the product from GainStag to TrackTuner.
- Updated branding, domain configuration and core product language.
- Migrated authentication architecture to Clerk.
- Prepared Lemon Squeezy webhook logic for future checkout activation.
- Deferred checkout while payment provider approval was pending.
Improvements
- Hardened payment webhook handling and refund logic.
- Restored deployable frontend and backend release state.
- Cleaned missing frontend files, lock files and repository metadata.
Deployment
- Commits included e01a360, 900b29f, 674090c and 83f3665.
- Repository and Vercel configuration were moved toward the TrackTuner production setup.
What's New
- Initial GainStag platform code was committed.
- Added architecture documentation, README updates and cleaned ignore rules.
- Documented frontend, backend, authentication and payment boundaries.
Fixes
- Removed secrets, local artifacts and unwanted generated files from tracked code.
- Added missing frontend source and TypeScript files required for stable builds.
Deployment
- Initial commit: 64ef1a3.
- Documentation and cleanup commit: 0586c31.
- Repository hardening commit: 83858f1.
What's New
- Expanded arrangement heuristics for repeated sections and flat movement.
- Added early transition mapping between low, medium and high energy sections.
- Started separating arrangement support from mix and mastering feedback.
Improvements
- Improved consistency of section labels across longer songs.
- Improved energy-curve interpretation for builds and drops.
- Reduced text-heavy feedback in favor of structure-first output.
What's New
- Created the first arrangement-aware drum pattern generator.
- Mapped kick, snare, hat and crash behavior to section type.
- Added early MIDI export tests for DAW import.
Improvements
- Started using intensity values for drum density and velocity.
- Added early fill behavior near section transitions.
- Separated drum output from audio sketch output.
What's New
- Added RMS energy analysis.
- Added transient and onset feature extraction.
- Added spectral movement features for contrast estimation.
- Added bar-grid mapping based on BPM and time signature.
Improvements
- Improved tempo-aligned section boundary calculations.
- Added early tests for section duration and timeline consistency.
What's New
- Created the first structure timeline concept.
- Added basic section labels and color-coded blocks.
- Added early original versus suggested arrangement comparison.
Improvements
- Improved bar-range display for DAW rebuilding.
- Started using fixed section explanations instead of generated commentary.
What's New
- Defined the core problem: producers need workflow support for finishing unfinished tracks.
- Outlined Arrangement MIDI as a DAW-native output format.
- Outlined Drum Arrangement MIDI as an editable workflow export.
Improvements
- Separated workflow assistance from automatic music creation.
- Established deterministic output as a product requirement.
- Established creator control as a product requirement.
