I developed an application in Unity for real time visuals during club nights. The toolset contains a high resolution BPM tapper, and a 32 band FFT implementation to react to the loudness of the sound.
I performed about twice a month for a year and a half. Venues I performed at include the Paradiso in Amsterdam, the Ekko in Utrecht and Urban Spree in Berlin during the A MAZE festival.
This particular toolset is out of commision, unfortunately.