======================== unified (from filesystem) ========================
                                         'bitrate'  '320.01'
                                        'duration'  '213'
                                          'artist'  'Kreator'
                                     'text_people'  ''
                                         'release'  'Out Of The Dark... Into The Light'
                                           'title'  'Lambs To The Slaughter'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-2', '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-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'thrash', 'thrash metal', 'metal', 'heavy metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'eid-metal-trash'
                                             'bpm'  '90.0'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Out Of The Dark... Into The Light'
'TBPM' (BPM (beats per minute))                     '90.0'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-trash'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'Lambs To The Slaughter'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kreator'
'TRCK' (Track number/Position in set)               '2'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['german', 'thrash', 'thrash metal', 'metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.667788'

========================== row from database ==========================
                                              'id'  1400383
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Kreator - 1988 - Out Of The Dark... Into The Light [320]/02 - Lambs To The Slaughter.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  213
                                           'genre'  eid-metal-trash
                                        'filesize'  8537776
                                           'mtime'  1620311566
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 1988 [320] 02 eid metal trash
                                      'tag_artist'  Kreator
                                     'tag_release'  Out Of The Dark... Into The Light
                                       'tag_title'  Lambs To The Slaughter
                                             'bpm'  90.0
                                    'search_title'  'lambs':1 'slaughter':4 'the':3 'to':2
                                   'search_artist'  'kreator':1
                                  'search_release'  'dark':4,5 'into':6 'light':7 'of':2 'out':1 'the':3
                                     'search_rest'  '00dwimp':1 '00metal':2 '1988':3 '320':4,5 'eid':6 'metal':7 'trash':8
                                    'search_combo'  '00dwimp':13 '00metal':14 '1988':15 '320':16,17 'dark':9C,10C 'eid':18 'into':11C 'kreator':5B 'lambs':1A 'light':12C 'metal':19 'of':7C 'out':6C 'slaughter':4A 'the':3A,8C 'to':2A 'trash':20
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', '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-4']
                                      'lastfmtags'  ['german', 'thrash', 'thrash metal', 'metal', 'heavy metal']
                                        'tag_date'  1988
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311565.5433223  (2021-05-06 16:32:45)
                             'size'  8537776