======================== unified (from filesystem) ========================
                                         'bitrate'  '191.712'
                                        'duration'  '172'
                                          'artist'  'The Vision Bleak'
                                     'text_people'  ''
                                         'release'  'The Deathship Has A New Captain'
                                           'title'  'A Shadow Arose'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'Q-PLAY-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['german', 'metal', 'gothic metal', 'dark metal', 'horror metal', 'symphonic "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-doom or gothic'
                                             'bpm'  '143.314'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Deathship Has A New Captain'
'TBPM' (BPM (beats per minute))                     '143.314'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-doom or gothic'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'A Shadow Arose'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Vision Bleak'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['german',
 'metal',
 'gothic metal',
 'dark metal',
 'horror metal',
 'symphonic 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-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.90 dB'
'TXXX:replaygain_track_peak'                        '0.377898'

========================== row from database ==========================
                                              'id'  1401369
                                            'path'  /data/Music/Bulk/00dwimp/00metal/The Vision Bleak/The Deathship Has A New Captain/The Vision Bleak - 01 - A Shadow Arose.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  172
                                           'genre'  eid-metal-doom or gothic
                                        'filesize'  4127472
                                           'mtime'  1620310305
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 01 eid metal doom or gothic
                                      'tag_artist'  The Vision Bleak
                                     'tag_release'  The Deathship Has A New Captain
                                       'tag_title'  A Shadow Arose
                                             'bpm'  143.314
                                    'search_title'  'a':1 'arose':3 'shadow':2
                                   'search_artist'  'bleak':3 'the':1 'vision':2
                                  'search_release'  'a':4 'captain':6 'deathship':2 'has':3 'new':5 'the':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'doom':5 'eid':3 'gothic':7 'metal':4 'or':6
                                    'search_combo'  '00dwimp':13 '00metal':14 'a':1A,10C 'arose':3A 'bleak':6B 'captain':12C 'deathship':8C 'doom':17 'eid':15 'gothic':19 'has':9C 'metal':16 'new':11C 'or':18 'shadow':2A 'the':4B,7C 'vision':5B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-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-PLAY-2', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['german', 'metal', 'gothic metal', 'dark metal', 'horror metal', 'symphonic metal']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310305.2469034  (2021-05-06 16:11:45)
                             'size'  4127472