======================== unified (from filesystem) ========================
                                         'bitrate'  '208.887'
                                        'duration'  '284'
                                          'artist'  'Kalmah'
                                     'text_people'  ''
                                         'release'  'They Will Return'
                                           'title'  'Hollow Heart'
                                           '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-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['power metal', 'melodic death metal', 'death metal', 'metal', 'finnish']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '132.5'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'They Will Return'
'TBPM' (BPM (beats per minute))                     '132.5'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'Winamp 5.32'
'TIT2' (Title/songname/content description)         'Hollow Heart'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kalmah'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Spikefarm Records'
'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'                                   ['power metal', 'melodic death metal', 'death metal', 'metal', 'finnish']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.82 dB'
'TXXX:replaygain_track_peak'                        '0.365056'

========================== row from database ==========================
                                              'id'  1400451
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Kalmah/Kalmah - They Will Return/Kalmah - 01 - Hollow Heart.mp3
                                         'working'  None
                                         'bitrate'  208
                                    'duration_sec'  284
                                           'genre'  eid-metal-death
                                        'filesize'  7425920
                                           'mtime'  1620302006
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 01 eid metal death
                                      'tag_artist'  Kalmah
                                     'tag_release'  They Will Return
                                       'tag_title'  Hollow Heart
                                             'bpm'  132.5
                                    'search_title'  'heart':2 'hollow':1
                                   'search_artist'  'kalmah':1
                                  'search_release'  'return':3 'they':1 'will':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'death':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':7 '00metal':8 'death':11 'eid':9 'heart':2A 'hollow':1A 'kalmah':3B 'metal':10 'return':6C 'they':4C 'will':5C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['power metal', 'melodic death metal', 'death metal', 'metal', 'finnish']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302005.6801386  (2021-05-06 13:53:25)
                             'size'  7425920