Some time ago I wanted to see how many songs have bass notes that go bellow 50Hz and I quickly realised that it way over my expertise to do that, but I'm still curios: would it be possible to display the frequencies for a particular track?
There’s pitch but that only cares about in which key the frequencies are concentrated (e.g. it tells you that this part of the song has mostly C pitches but not if it’s C2 or C4)