======================== unified (from filesystem) ========================
                                         'bitrate'  '247.045'
                                        'duration'  '521'
                                          'artist'  'Dream Theater'
                                     'text_people'  ''
                                         'release'  'When Dream and Day Unite'
                                           'title'  'The Killing Hand'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-4', 'q-grit-3', 'q-play-4', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '123.859'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'When Dream and Day Unite'
'TBPM' (BPM (beats per minute))                     '123.859'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'The Killing Hand'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dream Theater'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.45 dB'
'TXXX:replaygain_track_peak'                        '0.696162'

========================== row from database ==========================
                                              'id'  1411622
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Dream Theater - Dream.Theater/When Dream And Day Unite (1989)/MBZ;#Dream Theater;#When Dream and Day Unite;#1989-00-00;#04;#The Killing Hand.mp3
                                         'working'  None
                                         'bitrate'  247
                                    'duration_sec'  521
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  16121350
                                           'mtime'  1620736075
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Dream.Theater And (1989) MBZ;#Dream Theater;#When Unite;#1989 00 00;#04;#The rock cppex progressive;set pl progspace
                                      'tag_artist'  Dream Theater
                                     'tag_release'  When Dream and Day Unite
                                       'tag_title'  The Killing Hand
                                             'bpm'  123.859
                                    'search_title'  'hand':3 'killing':2 'the':1
                                   'search_artist'  'dream':1 'theater':2
                                  'search_release'  'and':3 'day':4 'dream':2 'unite':5 'when':1
                                     'search_rest'  '00':20,21,24 '04':22,25 '1989':6,7,17,19 'and':5 'classicprogpsy':1 'cppex':28 'dream':2,9,11 'dreamtheater':4 'mbz':8,10 'pl':33 'progressive':29,31 'progspace':34 'rock':27 'set':30,32 'the':23,26 'theater':3,12,14 'unite':16,18 'when':13,15
                                    'search_combo'  '00':30,31,34 '04':32,35 '1989':16,17,27,29 'and':8C,15 'classicprogpsy':11 'cppex':38 'day':9C 'dream':4B,7C,12,19,21 'dreamtheater':14 'hand':3A 'killing':2A 'mbz':18,20 'pl':43 'progressive':39,41 'progspace':44 'rock':37 'set':40,42 'the':1A,33,36 'theater':5B,13,22,24 'unite':10C,26,28 'when':6C,23,25
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-4', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']
                                        'tag_date'  1989
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736074.9648194  (2021-05-11 14:27:54)
                             'size'  16121350