======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '178'
                                          'artist'  'Finntroll'
                                     'text_people'  ''
                                         'release'  'Visor Om Slutet'
                                           'title'  'Suohengen Sija'
                                           '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-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '135.184'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Visor Om Slutet'
'TBPM' (BPM (beats per minute))                     '135.184'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Suohengen Sija'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Finntroll'
'TRCK' (Track number/Position in set)               '1'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.891962'

========================== row from database ==========================
                                              'id'  1391312
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Finntroll/Visor Om Slutet/01-finntroll-suohengen_sija.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  178
                                           'genre'  eid-metal-black
                                        'filesize'  4296552
                                           'mtime'  1620301695
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 01 finntroll suohengen_sija eid metal black
                                      'tag_artist'  Finntroll
                                     'tag_release'  Visor Om Slutet
                                       'tag_title'  Suohengen Sija
                                             'bpm'  135.184
                                    'search_title'  'sija':2 'suohengen':1
                                   'search_artist'  'finntroll':1
                                  'search_release'  'om':2 'slutet':3 'visor':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'black':8 'eid':6 'finntroll':3 'metal':7 'sija':5 'suohengen':4
                                    'search_combo'  '00dwimp':7 '00metal':8 'black':14 'eid':12 'finntroll':3B,9 'metal':13 'om':5C 'sija':2A,11 'slutet':6C 'suohengen':1A,10 'visor':4C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301695.431213  (2021-05-06 13:48:15)
                             'size'  4296552