Six Days — MVP sprint plan

What the MVP is

Six Days's launch MVP is a frictionless video-and-audio capture and review solution for the piano practice room, aimed at premium adult amateur pianists — high-income, intermediate-to-advanced, capable of self-review. It addresses the perceptual bubble — the gap between what a musician thinks they are playing and what they are actually playing — which is the most vividly experienced pain point and the one which can be corrected most visibly.

The MVP delivers a subset of the video-capture-and-review module's eventual scope.

Feature In (launch MVP) Full product (later releases)
AI feedback Yes — small subset of pattern detectors Rich library of detectors
Multi-angle video capture Yes —
One-time auto-configure Yes —
Score awareness No —
Repertoire awareness None Piece recognition
Customization None Custom detectors
Sharing and collaboration None Enabled
AI-guided user experience (hand-holding) None Enabled

Sprint plan

1. Proof of concept 2. Functional prototype 3. Demo-ready prototype 4. Manufacturing and launch 5. Early customer success
Duration 2 months · Aug – Sep 2026 2 months · Oct – Nov 2026 2 months · Dec 2026 – Jan 2027 4 months · Feb – May 2027 2 months · Jun – Jul 2027
Cost (~€1.4M arc) ~€65K ~€250K ~€125K ~€720K ~€260K
Activities during sprint
Software activities ~€10K
  • Multimodal AI/ML tool familiarity
  • Pose-tracking feasibility test
  • Hand-labelled review UI mockup
  • One-detector end-to-end PoC
 ~€80K
  • Full 12-detector library
  • Three multi-view path prototypes
  • Composed mobile review interface
  • Cross-take marker-and-jump
 ~€22K
  • Bug-fixing from beta feedback
  • Review UI refinements for demos
  • Demo content curation
  • Polish through crowdfunding video
 ~€95K
  • On-device inference port
  • Capture, sync, upload production integration
  • Backend: tiered storage + library sync
  • Onboarding flow + first-time setup
  • First quarterly detector expansion
 ~€50K
  • Cohort observation analytics
  • Detector expansion from marker patterns
  • Onboarding refinement for post-launch
  • Marker-and-jump refinement
Hardware activities ~€10K
  • Alpha study model (static)
  • Beta study model (adjustable, concierge)
  • Motor + hinge test rigs
  • Sensor + motor supplier scan
  • Initial hinge partner conversations
 ~€100K
  • Motorised study model (switch control)
  • Robotic study model with auto-alignment
  • Bench-rig reliability data
  • Power + thermal empirical test
  • Sensor, motor, BOM committed
 ~€65K
  • Industrial design finishing pass
  • 2–3 demo-quality units fabricated
  • Machined bezels, leather cradle
  • Two material variants
 ~€420K
  • Production run tooling
  • Contract manufacturing kicks off
  • Concierge-tier bespoke finishes
  • Second production run planning
 ~€45K
  • Small-batch redesign iteration
  • BOM optimisation with contractors
  • First-run yield improvements
  • Second production run
  • Accessory development kicks off
  • Y2 instrument groundwork (guitar first)
Customer activities ~€15K
  • Questionnaire on Tally Pro
  • Follow-up interviews with opt-ins
  • Detector-approach test with 5–8 pianists
  • Menu review with music-teaching advisor
  • Form-factor test with alpha testers
  • Facebook + Google smoke test
  • Blog + social handles live
  • Intro blog post published
  • Landing page + email waitlist
 ~€35K
  • Continued pricing conversations
  • Friendly-user beta with 5–8 pianists
  • Smoke-test refinement
  • Blog + social continue
 ~€17K
  • Aesthetic-desirability testing
  • Blog shifts to crowdfunding warm-up
  • Survey findings published
 ~€120K
  • Crowdfunding campaign launches
  • Blog + social as campaign backbone
  • Fulfilment: shipping, customs, taxes
  • Customer support infrastructure live
  • First units delivered to customers
 ~€140K
  • Paid channel testing at scale
  • PR + podcast + expert reviews
  • Content marketing scales
  • Referral program trial
  • First renewal cycle outreach
  • Support scaling
  • Unit economics on real data
Enabling activities (fundraising, legal) ~€30K
  • Advisor outreach: multimodal AI + music teaching
  • Investor list building
  • Pre-seed narrative drafted
  • S.r.l. + innovative-startup filing
  • Patent provisional on swinging arm
  • Trademarks (Alfine Labs, Six Days, Outer Ear)
 ~€35K
  • Pre-seed pitch process + close
  • Advisor pipeline expands
  • Advisor cash retainers begin
  • Production-scale contractor agreements
 ~€20K
  • Investor demos with demo-quality units
  • Crowdfunding campaign production
  • Manufacturing partner committed
  • Subscription terms + privacy policy
 ~€80K
  • Investor supplement negotiated + deployed
  • Advisor honoraria continue
  • CE + IEC 62133 + UN 38.3 certifications
  • GDPR + EU AI Act review
  • Subscription contracts + product liability
 ~€25K
  • Optional follow-on round
  • Y2 seed narrative from real numbers
  • Ongoing compliance
Product state at end of sprint
Physical object Alpha + beta study models Functional prototype (production-spec electronics) 2–3 demo units in launch materials Production run in customer hands Iterated; possible second run
Camera configuration Static / hand-positioned Motorised + auto-alignment Stable Auto-alignment on production hardware Stable
Detector library 1-detector PoC on real audio Full 12-detector library Stable 12 in production + first quarterly expansion Continued expansion
Review software Hand-labelled laptop mockup Composed mobile interface + marker-and-jump Polished for demos On-device inference + onboarding live Iterated from real usage
Ready to move on when Pose tracking is engineering-tractable with off-the-shelf tools. Beta pianists use the review interface unprompted over a week. Demo is production-quality for pitch meetings and the crowdfunding launch video; manufacturing partner committed. First units are in customer hands and being used with meaningful frequency. Customer advocacy is visible — referrals, feature requests, or waiting-list signups for other instruments.

Funding hypotheses

Note on timing. The durations shown are aggressive point targets, not promises. Slippage of 25–50% is normal for novelty-heavy work of this kind — a first hardware product, a first crowdfunding campaign, a first Italian S.r.l. and innovative-startup filing all being run in parallel for the first time. Under realistic slippage the arc lands closer to 15–18 months than 12; the plan reads best as an aspirational schedule for a founder whose priority is speed to market.