======================== unified (from filesystem) ========================
                                         'bitrate'  '198.102'
                                        'duration'  '185'
                                          'artist'  'Ella Fitzgerald feat. Chick Webb and His Orchestra'
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                                         'release'  'Flashbacks, Volume 1: High & Low: DrugSongs 1917-1944'
                                           'title'  'Wacky Dust'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '25'
                                            'date'  '1935'
                                        'comments'  ''
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                                             'bpm'  '145.476'
                                             'key'  '9A'
                                        'acoustid'  'dd20191b-9a32-4d79-9bd7-7528aad2c763'
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======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '145.476'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Wacky Dust'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ella Fitzgerald feat. Chick Webb and His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Trikont'
'TRCK' (Track number/Position in set)               '14/25'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Fitzgerald, Ella feat. Webb, Chick and His Orchestra'
'TXXX:ASIN'                                         'B0000517E4'
'TXXX:Acoustid Id'                                  'dd20191b-9a32-4d79-9bd7-7528aad2c763'
'TXXX:CATALOGNUMBER'                                'TRIKONT US-0275'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
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'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
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'TXXX:Q-LOCALNESS'                                  '2'
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'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.72 dB'
'TXXX:replaygain_track_peak'                        '0.350291'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Flashbacks #1 ~ Drug Songs 1917-44 ~ High and Low (Hoanzl) [217k VBR]/14 - Ella fitzgerald & Chick Webb & his Orchestra - Wacky Dust.mp3
                                         'working'  None
                                         'bitrate'  198
                                    'duration_sec'  185
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  4598134
                                           'mtime'  1620529065
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country #1 ~ ~ (Hoanzl) [217k VBR] 14 fitzgerald his prerock jb jazz unsorted
                                      'tag_artist'  Ella Fitzgerald feat. Chick Webb and His Orchestra
                                     'tag_release'  Flashbacks, Volume 1: High & Low: DrugSongs 1917-1944
                                       'tag_title'  Wacky Dust
                                             'bpm'  145.476
                                    'search_title'  'dust':2 'wacky':1
                                   'search_artist'  'and':7 'chick':5 'ella':1 'feat':3,4 'fitzgerald':2 'his':8 'orchestra':9 'webb':6
                                  'search_release'  '1':4,5 '1917':10 '19171944':12 '1944':11 'drug':13 'drugsongs':9 'flashbacks':1,2 'high':6 'low':7,8 'songs':14 'volume':3
                                     'search_rest'  '1':5,6 '217k':9,10 'country':4 'exotica':2 'fitzgerald':13 'his':14 'hoanzl':7,8 'jazz':1 'jb':16 'oldies':3 'prerock':15 'unsorted':17 'vbr':11,12
                                    'search_combo'  '1':15C,16C,30,31 '1917':21C '19171944':23C '1944':22C '217k':34,35 'and':9B 'chick':7B 'country':29 'drug':24C 'drugsongs':20C 'dust':2A 'ella':3B 'exotica':27 'feat':5B,6B 'fitzgerald':4B,38 'flashbacks':12C,13C 'high':17C 'his':10B,39 'hoanzl':32,33 'jazz':26 'jb':41 'low':18C,19C 'oldies':28 'orchestra':11B 'prerock':40 'songs':25C 'unsorted':42 'vbr':36,37 'volume':14C 'wacky':1A 'webb':8B
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620529064.7430174  (2021-05-09 04:57:44)
                             'size'  4598134