def ask_echonest(artist_name):
# get artist
artist = artist.search(name = artist_name)[0]
# get song
song = pyechonest.song.search(artist = artist, max_duration = 240, buckets = ["id:spotify-WW"])[0]
# return song id
return song.get_tracks('spotify-WW')[0]
def index(req):
#artist = "Weezer"
s = ""
s += "<!DOCTYPE html>"
s += "<html>"
s += "<head>"
s += "<title>Harmony Generated Playlist</title>"
s += "<script type='text/javascript' src='jwplayer.js'></script>"
s += "<script src='https://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js'></script>"
s += "<script src='token.js'></script>"
s += "<script src='rdio.js'></script>"
s += "<link rel='stylesheet' type='text/css' href='main.css'>"
s += "</head>"
s += "<body>"
s += "<div id='header'>"
s += "<h1>Harmony Generated Playlist</h1>"
s += "<a href='http://the.echonest.com'><img src='en-powered.gif' alt='Powered by the Echo Nest' /></a><br />"
s += "</div>"
#s += "Powered by <a href='http://www.rdio.com/'>Rdio®</a><br /><br />"
form = util.FieldStorage(req, keep_blank_values=1)
artist = form.getfirst("artist")
#s += str(myparameter)
song = getSong(artist)
track = song.get_tracks("7digital")[0]
s += "ARTIST: " + artist + "<br />"
s += "SONG TITLE: " + song.title + "<br /><br />"
#s += str(track) + "<br /><br />"
#s += "MP3: " + track['preview_url'] + "<br /><br />"
# Album Art
s += "<img src='" + track['release_image'] + "' />"
# MP3 player for seed song
s += "<div id='mediaspace'>This text will be replaced</div>"
s += """<script type='text/javascript'>
jwplayer('mediaspace').setup({
'flashplayer': 'player.swf',
'file': '""" + track['preview_url'] + """',
'controlbar': 'bottom',
'width': '470',
'height': '24'
});
</script>"""
# Print chord progression
s += "<br />"
s += "Chord Progression: "
chordProgression = getChordProgression(track)
s += "<div id='chord-progression'>"
for i in range(len(chordProgression)):
s += chordProgression[i]['name']
if i != len(chordProgression) - 1:
s += " - "
s += "</div>"
# Playlist
playlist = makePlaylist(artist, chordProgression)
s += "<br />"
for i in range(len(playlist)):
s += "<div class='playlist-item'>"
if playlist[i]['image'] != "NOT FOUND":
s += "<div class='image'>"
s += "<img src='" + playlist[i]['image'] + "' />"
s += "</div>"
else :
s += "<div class='image'>"
s += " "
s += "</div>"
s += "<div class='info'>"
s += "Artist: " + playlist[i]['artist'] + "<br />"
s += "Title: " + playlist[i]['title'] + "<br />"
s += "Key: " + keys[playlist[i]['key']]
if playlist[i]['mode'] == 1:
s += " major"
else:
s += " minor"
s += "<br />"
# player
#s += playlist[i]['rdio'] + "<br />"
#s += "<div id='player_" + str(i) + "'>This text will be replaced</div>"
#s += """<script type='text/javascript'>
#var flashvars = {
# 'playbackToken': playback_token, // from token.js
# 'domain': domain, // from token.js
# 'listener': 'callback_object' // the global name of the object that will receive callbacks from the SWF
# };
# var params = {
# 'allowScriptAccess': 'always'
# };
# var attributes = {};
# swfobject.embedSWF('http://www.rdio.com/api/swf/', // the location of the Rdio Playback API SWF
# 'player_""" + str(i) + """', // the ID of the element that will be replaced with the SWF
# 1, 1, '9.0.0', 'expressInstall.swf', flashvars, params, attributes);
#
# </script>"""
if playlist[i]['mp3'] != "NOT FOUND":
s += "<div id='player_" + str(i) + "'>This text will be replaced</div>"
s += """<script type='text/javascript'>
jwplayer('player_""" + str(i) + """').setup({
'flashplayer': 'player.swf',
'file': '""" + playlist[i]['mp3'] + """',
'controlbar': 'bottom',
'width': '470',
'height': '24'
});
</script>"""
s += "</div><!-- /.info -->"
s += "</div><!-- /.playlist-item -->"
#s += str(playlist)
s += "</body>"
s += "</html>"
return s
def application(environ, start_response):
s = ""
s += "<!DOCTYPE html>"
s += "<html>"
s += "<head>"
s += "<title>Harmony Generated Playlist</title>"
s += "<script type='text/javascript' src='jwplayer.js'></script>"
s += "<script src='https://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js'></script>"
s += "<link rel='stylesheet' type='text/css' href='main.css'>"
s += "</head>"
s += "<body>"
s += "<div id='header'>"
s += "<h1>Harmony Generated Playlist</h1>"
s += "<a href='http://the.echonest.com'><img src='en-powered.gif' alt='Powered by the Echo Nest' /></a><br />"
s += "</div>"
queryParams = parse_qs(environ['QUERY_STRING'])
artist = escape(queryParams.get('artist', [''])[0])
sim = escape(queryParams.get('sim', [''])[0])
if sim == "":
sim = "0"
if artist == "":
artist = "Weezer"
song = getSong(artist)
songTitle = escape(queryParams.get('song', [''])[0])
if isinstance(artist, types.StringType):
song = getSong2(artist, songTitle)
track = song.get_tracks("7digital-US")[0]
s += "<div id='info-container'>"
s += "<div id='info-left'>"
s += "ARTIST: " + song.artist_name + "<br />"
s += "SONG TITLE: " + song.title + "<br /><br />"
# Album Art
s += "<img src='" + track['release_image'] + "' />"
# MP3 player for seed song
s += "<div id='mediaspace'>This text will be replaced</div>"
s += """<script type='text/javascript'>
jwplayer('mediaspace').setup({
'flashplayer': 'player.swf',
'file': '""" + track['preview_url'] + """',
'controlbar': 'bottom',
'width': '470',
'height': '24'
});
</script>"""
s += "</div><!-- /#info-left -->"
s += "<div id='info-right'>"
s += "<h2>How It Works</h2>"
s += "<ul>"
s += "<li>Get seed artist from ?artist param (default Weezer)</li>"
s += "<li>Select random song from catalog (or from ?song)</li>"
s += "<li>Get audio analysis from Echo Nest</li>"
s += "<li>Get chroma vectors</li>"
s += "<li>Compare chroma vectors to chord dictionary</li>"
s += "<li>Use cosine similarity - choose closest</li>"
s += "<li>For each chord, select a song in that key</li>"
s += "<li>If chord = D maj, song key = D major</li>"
s += "<li>Select songs from similar artists only</li>"
s += "<li>Compile playlist</li>"
s += "</ul>"
s += "</div><!-- /#info-right -->"
s += "</div><!-- /#info-container -->"
# Print chord progression
s += "<br />"
s += "Chord Progression: "
chordProgression = getChordProgression(track)
s += "<div id='chord-progression'>"
for i in range(len(chordProgression)):
s += chordProgression[i]['name']
if sim == "1":
s += "<small>(" + str(chordProgression[i]['sim'] * 100) + "% )</small>"
if i != len(chordProgression) - 1:
s += " - "
s += "</div>"
# Playlist
playlist = makePlaylist(artist, chordProgression)
s += "<br />"
for i in range(len(playlist)):
s += "<div class='playlist-item'>"
if playlist[i]['image'] != "NOT FOUND":
s += "<div class='image'>"
s += "<img src='" + playlist[i]['image'] + "' />"
s += "</div>"
else :
s += "<div class='image'>"
s += " "
s += "</div>"
s += "<div class='info'>"
s += "Artist: " + playlist[i]['artist'] + "<br />"
s += "Title: " + playlist[i]['title'] + "<br />"
s += "Key: " + keys[playlist[i]['key']]
if playlist[i]['mode'] == 1:
s += " major"
else:
s += " minor"
s += "<br />"
if playlist[i]['mp3'] != "NOT FOUND":
s += "<div id='player_" + str(i) + "'>This text will be replaced</div>"
s += """<script type='text/javascript'>
jwplayer('player_""" + str(i) + """').setup({
'flashplayer': 'player.swf',
'file': '""" + playlist[i]['mp3'] + """',
'controlbar': 'bottom',
'width': '470',
'height': '24'
});
</script>"""
s += "</div><!-- /.info -->"
s += "</div><!-- /.playlist-item -->"
s += "</body>"
s += "</html>"
response_body = s
status = '200 OK'
response_headers = [('Content-Type', 'text/html'), ('Content-Length', str(len(response_body)))]
start_response(status, response_headers)
return [bytes(response_body)]