======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '99'
                                          'artist'  'Barksten'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'The struggle'
                                           'quals'  ("['Q-HAP-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'q-syn-2', "
 "'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-3', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['folk metal', 'medieval', 'folk', 'celtic', 'piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-metal-folk'
                                             'bpm'  '89.731'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '89.731'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-folk'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'The struggle'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Barksten'
'TPE2' (Band/orchestra/accompaniment)               'Barksten'
'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:lastfmtags'                                   ['folk metal', 'medieval', 'folk', 'celtic', 'piano']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.81 dB'
'TXXX:replaygain_track_peak'                        '0.467889'

========================== row from database ==========================
                                              'id'  1491287
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Barksten - The struggle -.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  99
                                           'genre'  eid-metal-folk
                                        'filesize'  1600195
                                           'mtime'  1620301741
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch eid metal folk
                                      'tag_artist'  Barksten
                                     'tag_release'  None
                                       'tag_title'  The struggle
                                             'bpm'  89.731
                                    'search_title'  'struggle':2 'the':1
                                   'search_artist'  'barksten':1
                                  'search_release'  
                                     'search_rest'  '00dutch':4 '00mid':1 'eid':5 'europe':3 'folk':7 'metal':6 'north':2
                                    'search_combo'  '00dutch':7 '00mid':4 'barksten':3B 'eid':8 'europe':6 'folk':10 'metal':9 'north':5 'struggle':2A 'the':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['folk metal', 'medieval', 'folk', 'celtic', 'piano']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301740.7290654  (2021-05-06 13:49:00)
                             'size'  1600195