======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '179'
                                          'artist'  'Gloria Gaynor'
                                     'text_people'  ''
                                         'release'  'The Hustle'
                                           'title'  'Never Can Say Goodbye'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['70s', 'female vocalists', 'soul', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '124.9'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Hustle'
'TBPM' (BPM (beats per minute))                     '124.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Never Can Say Goodbye'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Gloria Gaynor'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '113,190'
'TXXX:Mp3gain_undo'                                 '+004,+004,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:Tracknum'                                     '04'
'TXXX:lastfmtags'                                   ['70s', 'female vocalists', 'soul', 'pop', 'disco']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.40 dB'
'TXXX:replaygain_track_peak'                        '0.515260'

========================== row from database ==========================
                                              'id'  1532972
                                            'path'  /data/Music/Bulk/00poprockelectronic/Disco 70_s 80_s/[19XX] The Hustle/Gloria Gaynor - Never Can Say Goodbye - 04.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  179
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  3599044
                                           'mtime'  1620538077
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Disco 70_s 80_s [19XX] 04 electronic we disco italo
                                      'tag_artist'  Gloria Gaynor
                                     'tag_release'  The Hustle
                                       'tag_title'  Never Can Say Goodbye
                                             'bpm'  124.9
                                    'search_title'  'can':2 'goodbye':4 'never':1 'say':3
                                   'search_artist'  'gaynor':2 'gloria':1
                                  'search_release'  'hustle':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '19xx':7,8 '70':3 '80':5 'disco':2 'electronic':9 'italo':11 's':4,6 'we':10
                                    'search_combo'  '00poprockelectronic':9 '19xx':15,16 '70':11 '80':13 'can':2A 'disco':10 'electronic':17 'gaynor':6B 'gloria':5B 'goodbye':4A 'hustle':8C 'italo':19 'never':1A 's':12,14 'say':3A 'the':7C 'we':18
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           '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-2', 'Q-HAP-4', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['70s', 'female vocalists', 'soul', 'pop', 'disco']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620538077.0413017  (2021-05-09 07:27:57)
                             'size'  3599044