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Chords in Keys
A browser-based music tool that enables musicians and composers to play chords from major and minor keys in real-time
verified Jul 13, 2026 · HTTP 200
CohortClass of 2026What it is
A browser-based music tool that enables musicians and composers to play chords from major and minor keys in real-time. Users can experiment with different chord combinations to develop musical ideas and discover new progressions. Ideal for songwriting, music theory practice, and creative exploration.
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
452/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%no data
Tranco10%0.52
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y