======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '281'
                                          'artist'  'Bruce Springsteen'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Born in the USA'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'classic rock', 'singer songwriter', 'folk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'set-pl-billboard'
                                             'bpm'  '124.468'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '124.468'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-billboard'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Born in the USA'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bruce Springsteen'
'TXXX:Mp3gain_minmax'                               '107,186'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'singer songwriter', 'folk', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.02 dB'
'TXXX:replaygain_track_peak'                        '0.470835'

========================== row from database ==========================
                                              'id'  1301639
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Bruce Springsteen - Born in the USA.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  281
                                           'genre'  set-pl-billboard
                                        'filesize'  4501295
                                           'mtime'  1652397946
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] set pl billboard
                                      'tag_artist'  Bruce Springsteen
                                     'tag_release'  None
                                       'tag_title'  Born in the USA
                                             'bpm'  124.468
                                    'search_title'  'born':1 'in':2 'the':3 'usa':4
                                   'search_artist'  'bruce':1 'springsteen':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'billboard':9 'files':5,6 'loose':3,4 'pl':8 'set':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'billboard':15 'born':1A 'bruce':5B 'files':11,12 'in':2A 'loose':9,10 'pl':14 'set':13 'springsteen':6B 'the':3A 'unsorted':8 'usa':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'singer songwriter', 'folk', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652397945.6326525  (2022-05-13 01:25:45)
                             'size'  4501295