======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '106'
                                          'artist'  'Millencolin'
                                     'text_people'  ''
                                         'release'  'Signed for Life'
                                           'title'  'A Bit of Muslin'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '31'
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '112.3'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '31+A4699C64A9A6B3AB248A192BF'
'COMM:iTunes_CDDB_IDs:eng'                          '31+A4699C64A9A6B3AB248A192BF29D87EB+763917'
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'TBPM' (BPM (beats per minute))                     '112.3'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDOR' (Original release time)                      '1995'
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'iTunes v2.0.2'
'TIT2' (Title/songname/content description)         'A Bit of Muslin'
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Millencolin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3/31'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Millencolin'
'TXXX:Artists'                                      'Millencolin'
'TXXX:CATALOGNUMBER'                                'REC001'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'd17bfd6c-ade1-4f55-b1cd-c4fad8424c10'
'TXXX:MusicBrainz Album Release Country'            'SE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'a11aacf5-fcbe-47f9-b065-75f4466c00ae'
'TXXX:MusicBrainz Release Group Id'                 '1441e659-a45b-33f1-a653-afcbff4fdc38'
'TXXX:MusicBrainz Release Track Id'                 '464bcba7-1228-34c8-9a5d-574868a8f327'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']
'TXXX:originalyear'                                 '1995'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.40 dB'
'TXXX:replaygain_track_peak'                        '0.553503'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'bb1e8726-c386-468a-8de2-2bb4e8637bab')

========================== row from database ==========================
                                              'id'  1420389
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Millencolin/Melack/04 - Millencolin - A Bit Of Muslin.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  106
                                           'genre'  rock-gr-punk
                                        'filesize'  2224215
                                           'mtime'  1622659040
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Melack 04 Of rock gr punk
                                      'tag_artist'  Millencolin
                                     'tag_release'  Signed for Life
                                       'tag_title'  A Bit of Muslin
                                             'bpm'  112.3
                                    'search_title'  'a':1 'bit':2 'muslin':4 'of':3
                                   'search_artist'  'millencolin':1
                                  'search_release'  'for':2 'life':3 'signed':1
                                     'search_rest'  'garage':2 'gr':8 'melack':5 'of':6 'punk':1 'rock':7 'stoner':4 'surf':3
                                    'search_combo'  'a':1A 'bit':2A 'for':7C 'garage':10 'gr':16 'life':8C 'melack':13 'millencolin':5B 'muslin':4A 'of':3A,14 'punk':9 'rock':15 'signed':6C 'stoner':12 'surf':11
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['skate punk', 'swedish', 'punk rock', 'pop punk', 'punk', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1622659039.9999354  (2021-06-02 20:37:19)
                             'size'  2224215