======================== unified (from filesystem) ========================
                                         'bitrate'  '193.567'
                                        'duration'  '222'
                                          'artist'  'Rammstein'
                                     'text_people'  ''
                                         'release'  'Amerika'
                                           'title'  'Amerika (English Version)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'metal', 'rock']"
                                     'discogstags'  "['electronic', 'rock', 'classical', 'industrial', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-industrial'
                                             'bpm'  '124.698'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Amerika'
'TBPM' (BPM (beats per minute))                     '124.698'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-industrial'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Amerika (English Version)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rammstein'
'TPE2' (Band/orchestra/accompaniment)               'Rammstein'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Encoder'                                      'MPEGPlus (Stream 7, Profile Unknown)'
'TXXX:Fmps_playcount'                               '2'
'TXXX:Fmps_rating'                                  '0.6'
'TXXX:Fmps_rating_amarok_score'                     '0.281111'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'rock', 'classical', 'industrial', 'experimental']
'TXXX:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.93 dB'
'TXXX:replaygain_track_peak'                        '0.347236'

========================== row from database ==========================
                                              'id'  1400386
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Rammstein/02. Amerika (English Version).mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  222
                                           'genre'  eid-metal-industrial
                                        'filesize'  5383705
                                           'mtime'  1620311078
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 02. eid metal industrial
                                      'tag_artist'  Rammstein
                                     'tag_release'  Amerika
                                       'tag_title'  Amerika (English Version)
                                             'bpm'  124.698
                                    'search_title'  'amerika':1 'english':2,3 'version':4,5
                                   'search_artist'  'rammstein':1
                                  'search_release'  'amerika':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '02':3,4 'eid':5 'industrial':7 'metal':6
                                    'search_combo'  '00dwimp':8 '00metal':9 '02':10,11 'amerika':1A,7C 'eid':12 'english':2A,3A 'industrial':14 'metal':13 'rammstein':6B 'version':4A,5A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', '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-4']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'metal', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic', 'rock', 'classical', 'industrial', 'experimental']

============================== file details ==============================
                                           'mtime'  1620311077.5219615  (2021-05-06 16:24:37)
                             'size'  5383705