======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '1156'
                                          'artist'  'Christopher Young'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'The Core'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  ("['instrumental', 'film score', '8 of 10 stars', 'soundtrack', 'score', "
 "'composer']")
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '119.6'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '119.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'The Core'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Christopher Young'
'TXXX:Mp3gain_minmax'                               '034,179'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'stage & screen'
'TXXX:lastfmtags'                                   ['instrumental',
 'film score',
 '8 of 10 stars',
 'soundtrack',
 'score',
 'composer']
'TXXX:other'                                        '502'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.03 dB'
'TXXX:replaygain_track_peak'                        '0.598438'

========================== row from database ==========================
                                              'id'  1381648
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/J. Peter Robinson - CD5/502 - The Core (2003) Christopher Young (Suite).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  1156
                                           'genre'  electronic-unsorted
                                        'filesize'  46277709
                                           'mtime'  1620538551
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm J. Peter Robinson CD5 502 (2003) (Suite) electronic unsorted
                                      'tag_artist'  Christopher Young
                                     'tag_release'  None
                                       'tag_title'  The Core
                                             'bpm'  119.6
                                    'search_title'  'core':2 'the':1
                                   'search_artist'  'christopher':1 'young':2
                                  'search_release'  
                                     'search_rest'  '2003':7,8 '502':6 'cd5':5 'electronic':11 'j':1,2 'peter':3 'robinson':4 'suite':9,10 'unsorted':12
                                    'search_combo'  '2003':11,12 '502':10 'cd5':9 'christopher':3B 'core':2A 'electronic':15 'j':5,6 'peter':7 'robinson':8 'suite':13,14 'the':1A 'unsorted':16 'young':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'film score', '8 of 10 stars', 'soundtrack', 'score', 'composer']
                                        'tag_date'  2003
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1620538551.1713936  (2021-05-09 07:35:51)
                             'size'  46277709