======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '180'
                                          'artist'  'All Steel Coaches'
                                     'text_people'  ''
                                         'release'  'Cinderella The Swedish Stand 1989'
                                           'title'  'Volcano'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['hard rock', 'alternative rock', 'swedish rock', 'swedish alternative rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '110.062'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Cinderella The Swedish Stand 1989'
'TBPM' (BPM (beats per minute))                     '110.062'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TIT2' (Title/songname/content description)         'Volcano'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'All Steel Coaches'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['hard rock', 'alternative rock', 'swedish rock', 'swedish alternative rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.43 dB'
'TXXX:replaygain_track_peak'                        '0.489218'

========================== row from database ==========================
                                              'id'  1350351
                                            'path'  /data/Music/Bulk/00poprockelectronic/swedish rock/All Steel Coaches - VolcanoRe1.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  180
                                           'genre'  rock-unsorted
                                        'filesize'  2889600
                                           'mtime'  1620392790
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic swedish rock VolcanoRe1 rock unsorted
                                      'tag_artist'  All Steel Coaches
                                     'tag_release'  Cinderella The Swedish Stand 1989
                                       'tag_title'  Volcano
                                             'bpm'  110.062
                                    'search_title'  'volcano':1
                                   'search_artist'  'all':1 'coaches':3 'steel':2
                                  'search_release'  '1989':5 'cinderella':1 'stand':4 'swedish':3 'the':2
                                     'search_rest'  '00poprockelectronic':1 're1':7 'rock':3 'swedish':2 'unsorted':5 'volcano':6 'volcanore1':4
                                    'search_combo'  '00poprockelectronic':10 '1989':9C 'all':2B 'cinderella':5C 'coaches':4B 're1':16 'rock':12 'stand':8C 'steel':3B 'swedish':7C,11 'the':6C 'unsorted':14 'volcano':1A,15 'volcanore1':13
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', 'alternative rock', 'swedish rock', 'swedish alternative rock']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620392790.0026987  (2021-05-07 15:06:30)
                             'size'  2889600