======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '316'
                                          'artist'  'Venus & Marc'
                                     'text_people'  ''
                                         'release'  "Best Ever Top 100 90's"
                                           'title'  'Xummertime (Euro Dance Mixx)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-MIXBEAT-3', 'Q-UNU-1', 'q-syn-2', 'q-bass-2', "
 "'q-busy-3', 'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-4', "
 "'q-other-2', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  '[\'eurodance\', \'90s\', \'dance\', \'cover\', "90\'s"]'
                                     'discogstags'  "['electronic', 'euro house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '136.001'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     "Best Ever Top 100 90's"
'TBPM' (BPM (beats per minute))                     '136.001'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'lacadau'
'TIT2' (Title/songname/content description)         'Xummertime (Euro Dance Mixx)'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Venus & Marc'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'euro house']
'TXXX:lastfmtags'                                   ['eurodance', '90s', 'dance', 'cover', "90's"]
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.07 dB'
'TXXX:replaygain_track_peak'                        '0.612275'

========================== row from database ==========================
                                              'id'  1310736
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/09_Xummertime_(Euro_Dance_Mixx).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  316
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  12648855
                                           'mtime'  1621696025
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 09_Xummertime_(Euro_Dance_Mixx) electronic generic or radio unsorted
                                      'tag_artist'  Venus & Marc
                                     'tag_release'  Best Ever Top 100 90's
                                       'tag_title'  Xummertime (Euro Dance Mixx)
                                             'bpm'  136.001
                                    'search_title'  'dance':4 'euro':2,3 'mixx':5,6 'xummertime':1
                                   'search_artist'  'marc':2 'venus':1
                                  'search_release'  '100':4 '90':5 '90s':7 'best':1 'ever':2 's':6 'top':3
                                     'search_rest'  '00poprockelectronic':1 '09':3,8 '90s':2 'dance':6,11 'electronic':13 'euro':5,10 'generic':14 'mixx':7,12 'or':15 'radio':16 'unsorted':17 'xummertime':4,9
                                    'search_combo'  '00poprockelectronic':16 '09':18,23 '100':12C '90':13C '90s':15C,17 'best':9C 'dance':4A,21,26 'electronic':28 'euro':2A,3A,20,25 'ever':10C 'generic':29 'marc':8B 'mixx':5A,6A,22,27 'or':30 'radio':31 's':14C 'top':11C 'unsorted':32 'venus':7B 'xummertime':1A,19,24
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['eurodance', '90s', 'dance', 'cover', "90's"]
                                        'tag_date'  1995
                                     'discogstags'  ['electronic', 'euro house']

============================== file details ==============================
                                           'mtime'  1621696024.6643283  (2021-05-22 17:07:04)
                             'size'  12648855