======================== unified (from filesystem) ========================
                                         'bitrate'  '279.967'
                                        'duration'  '280'
                                          'artist'  'Amon Amarth'
                                     'text_people'  ''
                                         'release'  'With Oden on Our Side'
                                           'title'  "Hermod's Ride to Hel - Lokes Treachery, Part 1"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
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 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
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                                      'lastfmtags'  "['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '9'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'eid-metal-death;eid-metal-melodic'
                                             'bpm'  '87'
                                             'key'  '11B'
                                        'acoustid'  '25194d80-8d16-4736-b969-991af29fcbda'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'With Oden on Our Side'
'TBPM' (BPM (beats per minute))                     '87'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death', 'eid-metal-melodic']
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2006-09-22'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['mix', 'Jens Bogren'], ['producer', 'Jens Bogren'], ['engineer', 'Jens Bogren']])
'TIT2' (Title/songname/content description)         "Hermod's Ride to Hel - Lokes Treachery, Part 1"
'TKEY' (Initial key)                                '11B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Amon Amarth'
'TPE2' (Band/orchestra/accompaniment)               'Amon Amarth'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Metal Blade Records'
'TRCK' (Track number/Position in set)               '4/9'
'TSO2'                                              'Amon Amarth'
'TSOP' (Performer sort order)                       'Amon Amarth'
'TSRC' (ISRC (international standard recording code))  'USMBR0603157'
'TXXX:ASIN'                                         'B000HWXS2S'
'TXXX:Acoustid Id'                                  '25194d80-8d16-4736-b969-991af29fcbda'
'TXXX:Artists'                                      'Amon Amarth'
'TXXX:BARCODE'                                      '039841458428'
'TXXX:CATALOGNUMBER'                                '3984-14584-2'
'TXXX:MusicBrainz Album Artist Id'                  '5b687684-ad34-4a9f-b425-0e7aa81fbd38'
'TXXX:MusicBrainz Album Id'                         'd0fafceb-b2f1-344d-a9bc-a37216a39627'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5b687684-ad34-4a9f-b425-0e7aa81fbd38'
'TXXX:MusicBrainz Release Group Id'                 '6f6d289e-cd5b-3408-9d91-81da47a88ef0'
'TXXX:MusicBrainz Release Track Id'                 '1e76c2ba-2126-39ca-a6df-3372188e26bd'
'TXXX:Q-HAP'                                        '1'
'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'                                   ['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']
'TXXX:originalyear'                                 '2006'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.75 dB'
'TXXX:replaygain_track_peak'                        '0.377987'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ed1d8e4f-db23-4c47-b2b3-30517500afe1')

========================== row from database ==========================
                                              'id'  1498448
                                            'path'  /data/Music/Bulk/00dwimp/2006 - With Oden On Our Side/04 - Hermod_s Ride To Hel - Lokes Trachery Part 1.mp3
                                         'working'  None
                                         'bitrate'  280
                                    'duration_sec'  280
                                           'genre'  eid-metal-death;eid-metal-melodic
                                        'filesize'  9875675
                                           'mtime'  1620302084
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 2006 On 04 Hermod_s To Trachery eid metal death;eid metal melodic
                                      'tag_artist'  Amon Amarth
                                     'tag_release'  With Oden on Our Side
                                       'tag_title'  Hermod's Ride to Hel - Lokes Treachery, Part 1
                                             'bpm'  87.0
                                    'search_title'  '1':11 'hel':6 'hermod':1 'hermods':3 'lokes':7 'part':10 'ride':4 's':2 'to':5 'treachery':8,9
                                   'search_artist'  'amarth':2 'amon':1
                                  'search_release'  'oden':2 'on':3 'our':4 'side':5 'with':1
                                     'search_rest'  '00dwimp':1 '2006':2 'death':10,12 'eid':8,11,13 'hermod':4 'melodic':14 'metal':9 'on':3 's':5 'to':6 'trachery':7
                                    'search_combo'  '00dwimp':19 '1':11A '2006':20 'amarth':13B 'amon':12B 'death':28,30 'eid':26,29,31 'hel':6A 'hermod':1A,22 'hermods':3A 'lokes':7A 'melodic':32 'metal':27 'oden':15C 'on':16C,21 'our':17C 'part':10A 'ride':4A 's':2A,23 'side':18C 'to':5A,24 'trachery':25 'treachery':8A,9A 'with':14C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302083.7754483  (2021-05-06 13:54:43)
                             'size'  9875675