======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '253'
                                          'artist'  'Status Quo'
                                     'text_people'  ''
                                         'release'  'In the Army Now'
                                           'title'  'Red Sky'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hard rock', '80s', 'rock', 'british', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '11'
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '99.960'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'In the Army Now'
'TBPM' (BPM (beats per minute))                     '99.960'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDOR' (Original release time)                      '1986'
'TDRC' (Recording time)                             '1986-09-12'
'TIT2' (Title/songname/content description)         'Red Sky'
'TKEY' (Initial key)                                '8B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Status Quo'
'TPE2' (Band/orchestra/accompaniment)               'Status Quo'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Vertigo'
'TRCK' (Track number/Position in set)               '9/11'
'TSO2'                                              'Status Quo'
'TSOP' (Performer sort order)                       'Status Quo'
'TXXX:ASIN'                                         'B00000743A'
'TXXX:BARCODE'                                      '042283004924'
'TXXX:CATALOGNUMBER'                                '830 049-2'
'TXXX:MusicBrainz Album Artist Id'                  '1884ed9c-6fe1-468d-a7f8-8d19c9c4e441'
'TXXX:MusicBrainz Album Id'                         '00aeebee-9284-4b4a-9354-0a1d778a2e6f'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '1884ed9c-6fe1-468d-a7f8-8d19c9c4e441'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['hard rock', '80s', 'rock', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.59 dB'
'TXXX:replaygain_track_peak'                        '0.656121'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e1708826-7a71-4bd6-982e-ddc78efefd95')

========================== row from database ==========================
                                              'id'  1350089
                                            'path'  /data/Music/Bulk/00poprockelectronic/Status Quo/In The Army Now/09 - Red Sky.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  253
                                           'genre'  rock-pop
                                        'filesize'  5081263
                                           'mtime'  1621786431
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The 09 rock pop
                                      'tag_artist'  Status Quo
                                     'tag_release'  In the Army Now
                                       'tag_title'  Red Sky
                                             'bpm'  99.96
                                    'search_title'  'red':1 'sky':2
                                   'search_artist'  'quo':2 'status':1
                                  'search_release'  'army':3 'in':1 'now':4 'the':2
                                     'search_rest'  '00poprockelectronic':1 'pop':4 'rock':3 'the':2
                                    'search_combo'  '00poprockelectronic':9 'army':7C 'in':5C 'now':8C 'pop':12 'quo':4B 'red':1A 'rock':11 'sky':2A 'status':3B 'the':6C,10
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', '80s', 'rock', 'british', 'classic rock']
                                        'tag_date'  1986
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621786430.8281717  (2021-05-23 18:13:50)
                             'size'  5081263