I recently installed some WS2812B neopixels on my house as permanent house lighting. I want to use them for the holidays and would like to sync them to music for Xmas, Halloween and other holidays. However I am not sure how this is done? All of the music controllers I see, just activate random lights and patterns to the music. What I want it to do a "show" style sync.
During one beat of the music, one of the windows lights up. If the music has the piano that runs their fingers down all the keys, to have a single group of LEDS run down the strip, or for Halloween, if there is thunder in the sound, then have the lights flash blue like thunder.
However I can't find anything that explains how this is done. Any ideas or advise would be much appreciated.