======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Iron Maiden'
                                     'text_people'  ''
                                         'release'  'Best of the Beast'
                                           'title'  'The Trooper'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'eid-metal;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '106.869'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Best of the Beast'
'TBPM' (BPM (beats per minute))                     '106.869'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'The Trooper'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Maiden'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.529037'

========================== row from database ==========================
                                              'id'  1401806
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Iron Maiden vs Bob Marley - Iron Maiden/The Trooper.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  eid-metal;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  6114790
                                           'mtime'  1620300872
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal vs Bob Marley eid metal;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Iron Maiden
                                     'tag_release'  Best of the Beast
                                       'tag_title'  The Trooper
                                             'bpm'  106.869
                                    'search_title'  'the':1 'trooper':2
                                   'search_artist'  'iron':1 'maiden':2
                                  'search_release'  'beast':4 'best':1 'of':2 'the':3
                                     'search_rest'  '00dwimp':1 '00metal':2 'bob':4 'eid':6 'marley':5 'metal':7,9 'mor':16 'pl':11 'set':8,10,13,15 'shirleyspinoza':12,14 'vs':3
                                    'search_combo'  '00dwimp':9 '00metal':10 'beast':8C 'best':5C 'bob':12 'eid':14 'iron':3B 'maiden':4B 'marley':13 'metal':15,17 'mor':24 'of':6C 'pl':19 'set':16,18,21,23 'shirleyspinoza':20,22 'the':1A,7C 'trooper':2A 'vs':11
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['nwobhm', 'rock', 'hard rock', 'metal', 'heavy metal']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620300871.946267  (2021-05-06 13:34:31)
                             'size'  6114790