======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '257'
                                          'artist'  'Cradle of Filth'
                                     'text_people'  ''
                                         'release'  'Midian'
                                           'title'  'Cthulhu Dawn'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['symphonic black metal', 'black metal', 'metal', 'death metal', 'gothic "
 "metal']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '89.890'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Midian'
'TBPM' (BPM (beats per minute))                     '89.890'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Cthulhu Dawn'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cradle of Filth'
'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:discogstags'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['symphonic black metal', 'black metal', 'metal', 'death metal', 'gothic metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.17 dB'
'TXXX:replaygain_track_peak'                        '0.391661'

========================== row from database ==========================
                                              'id'  1315143
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Cradle of Filth - Cthulhu Dawn.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  257
                                           'genre'  eid-metal
                                        'filesize'  4120113
                                           'mtime'  1620301838
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] eid metal
                                      'tag_artist'  Cradle of Filth
                                     'tag_release'  Midian
                                       'tag_title'  Cthulhu Dawn
                                             'bpm'  89.89
                                    'search_title'  'cthulhu':1 'dawn':2
                                   'search_artist'  'cradle':1 'filth':3 'of':2
                                  'search_release'  'midian':1
                                     'search_rest'  '00poprockelectronic':1 'eid':7 'files':5,6 'loose':3,4 'metal':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'cradle':3B 'cthulhu':1A 'dawn':2A 'eid':13 'files':11,12 'filth':5B 'loose':9,10 'metal':14 'midian':6C 'of':4B 'unsorted':8
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', '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-2']
                                      'lastfmtags'  ['symphonic black metal', 'black metal', 'metal', 'death metal', 'gothic metal']
                                        'tag_date'  2001
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301837.6409776  (2021-05-06 13:50:37)
                             'size'  4120113