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At Vochlea, they have built vocal-controlled music-making software that employs real-time audio and real-time machine learning. They have used QML as it allows them to rapidly develop beautiful, hardware-accelerated user interfaces. C++ with JUCE dominates the world of music-making software development. However, whilst JUCE provides UI functionality, it is far less productive than using QML. Qt does not have real-time, low-latency audio support, therefore we have taken the step of combining the use of both libraries to get the best of both worlds. Real-time audio programming comes with important threading and memory allocation restrictions; we consider these in our architecture.