======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '190'
                                          'artist'  'KC and the Sunshine Band'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Get Down Tonight'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', '70s', 'pop', 'funk', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo;set-pl-billboard'
                                             'bpm'  '112.8'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.8'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-we-disco or italo', 'set-pl-billboard']
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Get Down Tonight'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'KC and the Sunshine Band'
'TXXX:Mp3gain_minmax'                               '129,188'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', '70s', 'pop', 'funk', 'disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.98 dB'
'TXXX:replaygain_track_peak'                        '0.455098'

========================== row from database ==========================
                                              'id'  1523688
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/KC and the Sunshine Band - Get Down Tonight.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  190
                                           'genre'  electronic-we-disco or italo;set-pl-billboard
                                        'filesize'  2664463
                                           'mtime'  1620538017
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s electronic we disco or italo;set pl billboard
                                      'tag_artist'  KC and the Sunshine Band
                                     'tag_release'  None
                                       'tag_title'  Get Down Tonight
                                             'bpm'  112.8
                                    'search_title'  'down':2 'get':1 'tonight':3
                                   'search_artist'  'and':2 'band':5 'kc':1 'sunshine':4 'the':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '70':3 '80':5 'billboard':15 'disco':2 'electronic':7 'italo':10,12 'or':9 'pl':14 's':4,6 'set':11,13 'we':8
                                    'search_combo'  '00poprockelectronic':9 '70':11 '80':13 'and':5B 'band':8B 'billboard':23 'disco':10 'down':2A 'electronic':15 'get':1A 'italo':18,20 'kc':4B 'or':17 'pl':22 's':12,14 'set':19,21 'sunshine':7B 'the':6B 'tonight':3A 'we':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-4', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['dance', '70s', 'pop', 'funk', 'disco']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620538017.1222615  (2021-05-09 07:26:57)
                             'size'  2664463