======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '83'
                                          'artist'  'Jethro Tull'
                                     'text_people'  ''
                                         'release'  'Aqualung'
                                           'title'  'Cheap Day Return'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']"
                                     'discogstags'  "['rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;rock-cppex-progressive'
                                             'bpm'  '108.704'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000060 00000093 000010FD 000010C6 0000B16A 0000B16A 00004263 00004571 '
 '0000ECBC 0000B16A')
'TALB' (Album/Movie/Show title)                     'Aqualung'
'TBPM' (BPM (beats per minute))                     '108.704'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'rock-cppex-progressive']
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Cheap Day Return'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jethro Tull'
'TRCK' (Track number/Position in set)               '3'
'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', 'classic rock']
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.96 dB'
'TXXX:replaygain_track_peak'                        '0.912432'

========================== row from database ==========================
                                              'id'  1352049
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/jethro tull - aqualung - 03 - cheap day return.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  83
                                           'genre'  rock-cppex-classic;rock-cppex-progressive
                                        'filesize'  1337344
                                           'mtime'  1636039353
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] jethro tull aqualung 03 cheap day return rock cppex classic;rock cppex progressive
                                      'tag_artist'  Jethro Tull
                                     'tag_release'  Aqualung
                                       'tag_title'  Cheap Day Return
                                             'bpm'  108.704
                                    'search_title'  'cheap':1 'day':2 'return':3
                                   'search_artist'  'jethro':1 'tull':2
                                  'search_release'  'aqualung':1
                                     'search_rest'  '00poprockelectronic':1 'aqualung':9 'cheap':10 'classic':15,17 'cppex':14 'day':11 'files':5,6 'jethro':7 'loose':3,4 'progressive':19 'return':12 'rock':13,16,18 'tull':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'aqualung':6C,15 'cheap':1A,16 'classic':21,23 'cppex':20 'day':2A,17 'files':11,12 'jethro':4B,13 'loose':9,10 'progressive':25 'return':3A,18 'rock':19,22,24 'tull':5B,14 'unsorted':8
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636039352.9505718  (2021-11-04 16:22:32)
                             'size'  1337344