25. The article of manufacture of claim 20 , further including instructions that, when executed, cause the computing device to transform at least some of the audio from a time domain to a frequency domain.
20. An article of manufacture comprising instructions that, when executed, cause a computing device to at least: extract a first audio feature from audio, the first audio feature including at least one of a temporal feature, a spectral feature, a harmonic feature, or a rhythmic feature; extract a second audio feature from the audio, the second audio feature including at least one of a temporal feature, a spectral feature, a harmonic feature, or a rhythmic feature, wherein the second audio feature is different from the first audio feature; determine a first range for the first audio feature and a second range for the second audio feature; and store the first range and the second range to compare against other audio features from subsequent audio to generate tags signifying semantic audio information for the subsequent audio.