features.txt

Going to use:
artist familiarity	float	algorithmic estimation	url
artist hotttnesss	float	algorithmic estimation	url
beats start	array float	result of beat tracking	url
danceability	float	algorithmic estimation	
duration	float	in seconds	
end of fade in	float	seconds at the beginning of the song	url
energy	float	energy from listener point of view	
key	int	key the song is in	url
loudness	float	overall loudness in dB	url
sections start	array float	largest grouping in a song, e.g. verse	url
segments loudness max	array float	max dB value	url
segments loudness max time	array float	time of max dB value, i.e. end of attack	url
segments loudness max start	array float	dB value at onset	url
segments pitches	2D array float	chroma feature, one value per note	url
segments start	array float	musical events, ~ note onsets	url
segments timbre	2D array float	texture features (MFCC+PCA-like)	url
start of fade out	float	time in sec	url
tatums start	array float	smallest rythmic element	url
tempo	float	estimated tempo in BPM	url
time signature	int	estimate of number of beats per bar, e.g. 4	url


Might use:
year	int	song release year from MusicBrainz or 0	url
mode	int	major or minor	url

audio md5	string	audio hash code	
bars start	array float	beginning of bars, usually on a beat	url
artist latitude	float	latitude	
artist longitude	float	longitude


Predicting:
song hotttnesss	float	algorithmic estimation