Overall · Service disruption
Backend unreachable (The operation was aborted due to timeout)
Services
Analysis APIBackend unreachable (The operation was aborted due to timeout)
Stem separation — Studio cloud (Replicate Demucs)4-stem Demucs v4 on Replicate GPUs — Studio plan, typical 25–35 s per 4-min track. Free runs phase cancellation in-browser and isn't dependent on this service.
Audio-to-MIDI (Basic Pitch)In-process inference · typical 8–15 s per track
Tempo / pitch processing (ffmpeg)Native ffmpeg · typical 1–3 s per track
Studio frontendVercel · global edge
CDN + downloadsVercel CDN · 24-hour signed asset URLs
Subscribe to incidents
Email status@signalkey.iowith subject "Subscribe" to get notified when an incident is opened or closed. We post within 5 minutes of detection.
Past incidents
We're a young site — incident history will appear here once we have anything worth reporting. The detection path is real: UptimeRobot pings /health every minute and triggers a page if the backend stops responding.