<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '442'
                                          'artist'  'Sólstafir'
                                     'text_people'  ''
                                         'release'  'Berdreyminn'
                                           'title'  'Hvít sæng'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['icelandic', 'post black metal', 'black metal', 'progressive metal', "
 "'rock', 'post metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '8'
                                            'date'  '2017'
                                        'comments'  ''
                                           'genre'  'eid-metal-progressive'
                                             'bpm'  '140'
                                             'key'  '7A'
                                        'acoustid'  '99dd611f-64f7-4288-90d8-1fad988aa367'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382f18e0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1526148"/>
'TALB' (Album/Movie/Show title)                     'Berdreyminn'
'TBPM' (BPM (beats per minute))                     '140'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-progressive'
'TDOR' (Original release time)                      '2017'
'TDRC' (Recording time)                             '2017-05-26'
'TIT2' (Title/songname/content description)         'Hvít sæng'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '442164'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Sólstafir'
'TPE2' (Band/orchestra/accompaniment)               'Sólstafir'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Season of Mist'
'TRCK' (Track number/Position in set)               '5/8'
'TSO2'                                              'Sólstafir'
'TSOP' (Performer sort order)                       'Sólstafir'
'TSRC' (ISRC (international standard recording code))  'FR33T1741206'
'TXXX:Acoustid Id'                                  '99dd611f-64f7-4288-90d8-1fad988aa367'
'TXXX:Artists'                                      'Sólstafir'
'TXXX:DISCOGS_ARTIST_ID'                            '511792'
'TXXX:DISCOGS_CATALOG'                              'SOM 412LP'
'TXXX:DISCOGS_COUNTRY'                              'France'
'TXXX:DISCOGS_LABEL'                                'Season Of Mist'
'TXXX:DISCOGS_LABEL_ID'                             '33674'
'TXXX:DISCOGS_RATING'                               '0.0'
'TXXX:DISCOGS_RELEASED'                             '2017-05-26'
'TXXX:DISCOGS_RELEASE_ID'                           '10311670'
'TXXX:DISCOGS_RELEASE_MONTH'                        '05'
'TXXX:DISCOGS_VOTES'                                '0'
'TXXX:MusicBrainz Album Artist Id'                  '5f976464-4a48-4c0e-aee4-bb70afaf7a8b'
'TXXX:MusicBrainz Album Id'                         '8b931a7b-bf8e-40e4-a09b-e920afb4ff9d'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5f976464-4a48-4c0e-aee4-bb70afaf7a8b'
'TXXX:MusicBrainz Release Group Id'                 'cf3ccec8-abca-450c-a581-a957002d9ba6'
'TXXX:MusicBrainz Release Track Id'                 '9edd842a-8a9d-4202-9696-cf6e66eb3241'
'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:STYLE'                                        'Experimental'
'TXXX:UPC'                                          '822603141221'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['icelandic',
 'post black metal',
 'black metal',
 'progressive metal',
 'rock',
 'post metal']
'TXXX:originalyear'                                 '2017'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.380491'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'19a220d5-a6d3-4b12-aa65-05d1aee244d0')

========================== row from database ==========================
                                              'id'  1526148
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Sólstafir _2017 - Berdreyminn/05. Hvít Sæng.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  442
                                           'genre'  eid-metal-progressive
                                        'filesize'  17746557
                                           'mtime'  1620310889
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal _2017 05. Sæng eid metal progressive
                                      'tag_artist'  Sólstafir
                                     'tag_release'  Berdreyminn
                                       'tag_title'  Hvít sæng
                                             'bpm'  140.0
                                    'search_title'  'hvit':1,2 'saeng':4 'sæng':3
                                   'search_artist'  'solstafir':1,2
                                  'search_release'  'berdreyminn':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '05':4,5 '2017':3 'eid':8 'metal':9 'progressive':10 'saeng':7 'sæng':6
                                    'search_combo'  '00dwimp':8 '00metal':9 '05':11,12 '2017':10 'berdreyminn':7C 'eid':15 'hvit':1A,2A 'metal':16 'progressive':17 'saeng':4A,14 'solstafir':5B,6B 'sæng':3A,13
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['icelandic', 'post black metal', 'black metal', 'progressive metal', 'rock', 'post metal']
                                        'tag_date'  2017
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310888.584101  (2021-05-06 16:21:28)
                             'size'  17746557