======================== unified (from filesystem) ========================
                                         'bitrate'  '225.628'
                                        'duration'  '156'
                                          'artist'  'Jay-Z And Linkin Park'
                                     'text_people'  ''
                                         'release'  'Collision Course'
                                           'title'  "Big Pimpin'/Papercut (Live)"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-4', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['linkin park', 'alternative', 'hip hop', 'rap', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-nu'
                                             'bpm'  '138.1'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Collision Course'
'TBPM' (BPM (beats per minute))                     '138.1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-nu'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         "Big Pimpin'/Papercut (Live)"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jay-Z And Linkin Park'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['linkin park', 'alternative', 'hip hop', 'rap', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.43 dB'
'TXXX:replaygain_track_peak'                        '0.319308'

========================== row from database ==========================
                                              'id'  1353261
                                            'path'  /data/Music/Bulk/00poprockelectronic/Linkin Park/Jay-Z & Linkin Park/203 - big pimpin-papercut (live).mp3
                                         'working'  None
                                         'bitrate'  225
                                    'duration_sec'  156
                                           'genre'  eid-metal-nu
                                        'filesize'  4535428
                                           'mtime'  1620311142
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic & 203 big pimpin papercut (live) eid metal nu
                                      'tag_artist'  Jay-Z And Linkin Park
                                     'tag_release'  Collision Course
                                       'tag_title'  Big Pimpin'/Papercut (Live)
                                             'bpm'  138.1
                                    'search_title'  'big':1 'live':5,6 'papercut':3 'pimpin':2 'pimpinpapercut':4
                                   'search_artist'  'and':4 'jay':1 'jayz':3 'linkin':5 'park':6 'z':2
                                  'search_release'  'collision':1 'course':2
                                     'search_rest'  '00poprockelectronic':1 '203':2 'big':3 'eid':8 'live':6,7 'metal':9 'nu':10 'papercut':5 'pimpin':4
                                    'search_combo'  '00poprockelectronic':15 '203':16 'and':10B 'big':1A,17 'collision':13C 'course':14C 'eid':22 'jay':7B 'jayz':9B 'linkin':11B 'live':5A,6A,20,21 'metal':23 'nu':24 'papercut':3A,19 'park':12B 'pimpin':2A,18 'pimpinpapercut':4A 'z':8B
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['linkin park', 'alternative', 'hip hop', 'rap', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311142.4905295  (2021-05-06 16:25:42)
                             'size'  4535428