======================== unified (from filesystem) ========================
                                         'bitrate'  '194.104'
                                        'duration'  '283'
                                          'artist'  'Sophie Hutchings'
                                     'text_people'  ''
                                         'release'  'Becalmed'
                                           'title'  'It Remains'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'neoclassical', 'piano', 'post classical', "
 "'modern classical']")
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '143.7'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:http://www.cdtag.com:\x02\x00Â*]\x00'         PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xc2*]\x00')
'TALB' (Album/Movie/Show title)                     'Becalmed'
'TBPM' (BPM (beats per minute))                     '143.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2010-08-13'
'TIT2' (Title/songname/content description)         'It Remains'
'TKEY' (Initial key)                                '10B'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Sophie Hutchings'
'TPE2' (Band/orchestra/accompaniment)               'Sophie Hutchings'
'TRCK' (Track number/Position in set)               '08'
'TSO2'                                              'Hutchings, Sophie'
'TSOP' (Performer sort order)                       'Hutchings, Sophie'
'TXXX:FIRST_PLAYED'                                 '2014-03-03 21:21:12'
'TXXX:MusicBrainz Album Artist Id'                  '67ebbe4e-8c36-48ac-9660-e184136ecc50'
'TXXX:MusicBrainz Album Id'                         'edf5139f-71b7-4f7c-bc50-7fd828d4abef'
'TXXX:MusicBrainz Album Release Country'            'AU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '67ebbe4e-8c36-48ac-9660-e184136ecc50'
'TXXX:MusicBrainz Release Group Id'                 'd75333e7-76f4-41c2-abc7-17ae16e96ef9'
'TXXX:PLAY_COUNTER'                                 '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Release type'                                 'Normal release'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['contemporary classical',
 'neoclassical',
 'piano',
 'post classical',
 'modern classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+20.44 dB'
'TXXX:replaygain_track_peak'                        '0.052320'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a16bb980-3271-4c62-9315-b08b52e6fb75')

========================== row from database ==========================
                                              'id'  1369539
                                            'path'  /data/Music/Bulk/00instruments-classical/Sophie Hutchings - Becalmed/08 - It Remains.mp3
                                         'working'  None
                                         'bitrate'  194
                                    'duration_sec'  283
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  6900931
                                           'mtime'  1637329806
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 08 prerock classical or classical instruments
                                      'tag_artist'  Sophie Hutchings
                                     'tag_release'  Becalmed
                                       'tag_title'  It Remains
                                             'bpm'  143.7
                                    'search_title'  'it':1 'remains':2
                                   'search_artist'  'hutchings':2 'sophie':1
                                  'search_release'  'becalmed':1
                                     'search_rest'  '00instruments':1 'classical':2 'instruments':5 'or':4 'prerock':3
                                    'search_combo'  '00instruments':6 'becalmed':5C 'classical':7 'hutchings':4B 'instruments':10 'it':1A 'or':9 'prerock':8 'remains':2A 'sophie':3B
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'neoclassical', 'piano', 'post classical', 'modern classical']
                                        'tag_date'  2010
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1637329805.6987467  (2021-11-19 14:50:05)
                             'size'  6900931