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The most relevant piece of software I could find is called Praat. It's free, and it offers spectral, pitch, and formant analysis—but it was developed for the study of phonetics.
This is deep software ...
Although I am not a lawyer, I believe that the CALM act does apply to commercials, either the ones you produce in-house or the one provided by a third party (as I suppose you are in the US).
For the ...
If the sheet music you are talking about is classical music, they are in public domain because the copyrights expire some time after composer's death (50-70 years depending on the laws of the country)....