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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I'd start with looking at sequencers and figure out whether you're happy with one that does not require a physical dongle or not. If real hardware (cartridge port for dongle) is not a must, you might want to look into the MIST (https://github.com/mist-devel/mist-board/wiki) since it comes with MIDI ports right away.
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