======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '162'
                                          'artist'  'Iron Maiden'
                                     'text_people'  ''
                                         'release'  "Eddie's Archive - best of b-si"
                                           'title'  'Burning Ambition'
                                           'quals'  ("['Q-HAP-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-unsorted'
                                             'bpm'  '125.393'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Eddie's Archive - best of b-si"
'TBPM' (BPM (beats per minute))                     '125.393'
'TCON' (Content type, a.k.a. Genre)                 'eid-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Burning Ambition'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Maiden'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.77 dB'
'TXXX:replaygain_track_peak'                        '0.387929'

========================== row from database ==========================
                                              'id'  157683
                                            'path'  /data/Music/Bulk/00dwimp/Unsorted/Iron Maiden Best Of B-sides__cifsc952.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  162
                                           'genre'  eid-unsorted
                                        'filesize'  3895236
                                           'mtime'  1620521109
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp Unsorted Best Of sides__cifsc952 eid unsorted
                                      'tag_artist'  Iron Maiden
                                     'tag_release'  Eddie's Archive - best of b-si
                                       'tag_title'  Burning Ambition
                                             'bpm'  125.393
                                    'search_title'  'ambition':2 'burning':1
                                   'search_artist'  'iron':1 'maiden':2
                                  'search_release'  'archive':4 'b':7 'best':5 'bsi':9 'eddie':1 'eddies':3 'of':6 's':2 'si':8
                                     'search_rest'  '00dwimp':1 'best':3 'cifsc952':6 'eid':7 'of':4 'sides':5 'unsorted':2
                                    'search_combo'  '00dwimp':14 'ambition':2A 'archive':8C 'b':11C 'best':9C,16 'bsi':13C 'burning':1A 'cifsc952':19 'eddie':5C 'eddies':7C 'eid':20 'iron':3B 'maiden':4B 'of':10C,17 's':6C 'si':12C 'sides':18 'unsorted':15
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620521109.4305127  (2021-05-09 02:45:09)
                             'size'  3895236