Theremin
Not really a beginner project.
the project will be built around these circuits or similar:
VCA option 1: [1] (scroll down to last circuit)
VCA option 2: [2] (scroll down to last circuit)
VCO option 1 (555): [3]
VCO option 2 (Lamp): [4] (scroll down to pg 3, Figure 2a)
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