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Treblekey
Treblekey provides structured musical exercises and training tools designed for beginners learning music fundamentals
verified Jul 13, 2026 · HTTP 200
CohortClass of 2026What it is
Treblekey provides structured musical exercises and training tools designed for beginners learning music fundamentals. The platform offers fretboard navigation lessons, ear training modules, and randomized note generation exercises to build practical musicianship skills.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y