This is going to be a fun live-coding session using NumPy and SoundDevice. The goal of this talk is to make the computer produce realistic-sounding instrument sounds, using nothing but math. All the code will be written live and we'll hear the audio that it produces. We’ll start with creating a simple sound using a sine wave. We’ll gradually make it sound more like a real instrument, learning a little bit about music theory on the way. We’ll add features one-by-one until by the end of the talk, we’ll hear our synthesizer play a piece of classical music.