Here's how you can make an audio spectrum effect with your music as a .wav file in DaVinci Resolve 16. We use the audio waveform effect which you can get in Reactor 3 to do this.
◣ Reactor 3.0 Download ◢
https://www.steakunderwater.com/wesuckless/viewtopic.php?f=32&t=3067
◣ Finished Example Settings File ◢
(Requires AudioWaveform script which is installed in Reactor 3)
https://drive.google.com/file/d/1fKoMxmiX9Nt16MTjwQkmzlJjPAwCMaj0/view?usp=sharing