======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '247'
                                          'artist'  'Billy Ocean'
                                     'text_people'  ''
                                         'release'  'Hits of the 80s'
                                           'title'  'Loverboy'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'dance', 'soul', 'pop', 'loverboy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '107.836'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hits of the 80s'
'TBPM' (BPM (beats per minute))                     '107.836'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Loverboy'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Ocean'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '5'
'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:lastfmtags'                                   ['80s', 'dance', 'soul', 'pop', 'loverboy']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.18 dB'
'TXXX:replaygain_track_peak'                        '0.687814'

========================== row from database ==========================
                                              'id'  1530839
                                            'path'  /data/Music/Bulk/00poprockelectronic/Hits Of The 80_s/Billy Ocean - Loverboy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  247
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3963513
                                           'mtime'  1621696286
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Of The 80_s electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Billy Ocean
                                     'tag_release'  Hits of the 80s
                                       'tag_title'  Loverboy
                                             'bpm'  107.836
                                    'search_title'  'loverboy':1
                                   'search_artist'  'billy':1 'ocean':2
                                  'search_release'  '80s':4 'hits':1 'of':2 'the':3
                                     'search_rest'  '00poprockelectronic':1 '80':4 'billboard':15 'electronic':6 'generic':7 'of':2 'or':8 'pl':14 'radio':9 's':5 'set':11,13 'the':3 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':8 '80':11 '80s':7C 'billboard':22 'billy':2B 'electronic':13 'generic':14 'hits':4C 'loverboy':1A 'ocean':3B 'of':5C,9 'or':15 'pl':21 'radio':16 's':12 'set':18,20 'the':6C,10 'unsorted':17,19
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'soul', 'pop', 'loverboy']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696286.3205178  (2021-05-22 17:11:26)
                             'size'  3963513