Just wanted to throw out a few industry usage tags that might be beneficial to your library or original music if you represent Electronica, Rocktronica, Dubstep or heavy grooving tracks.
Tempo
BPM: 85-115
Regarding tempo, it is safe to say that most tempo variations will be between 60-120. Also, half-time feels and slower tempos have an impact on spots that involve flight and slow motion.
Here is an example: http://www.youtube.com/watch?v=DjIyWEsy5vc
Rhythm/Groove: The groove will usually contain heavy beats on 2 and 4 as well as punchy rhythms and aggressive hits, even if the genre is more “ambient” there will still be a back beat or syncopated rhythms.
Here is an example: http://www.youtube.com/watch?v=imh22mPH1aA
Predominant Genre: Rocktronica, Electronica, Urban, Dubstep
Most extreme sports music contains elements of Electronica, Rock and sometimes orchestral hybrids that include electronic textures, cinematic themes and heavy drums that create a more dramatic effect. Also fusion of Rock, Urban and Electronica are sometimes evident.
Here is an example: http://www.youtube.com/watch?v=wvj6vAyHY2I
Texture:
Use of gritty electric guitars and synths, dubstep elements, atmospheric textures and futuristic sounds are predominant and produce an energetic feel. Swells, breakdowns and builds in the musical form also contribute to the action and motion behind the film spot.
Here is an example: http://www.youtube.com/watch?v=GAt1BOKL93Q
Hopefully these keywords will be helpful to your library!
Marina
If you have a large library of music that needs tagging, we can help!