======================== unified (from filesystem) ========================
                                         'bitrate'  '159.986'
                                        'duration'  '296'
                                          'artist'  'Billy Squier'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1984'
                                           'title'  'Rock Me Tonite'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['american', 'rock', '80s', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '99'
                                      'tracktotal'  ''
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '128.332'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1984'
'TBPM' (BPM (beats per minute))                     '128.332'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Rock Me Tonite'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Squier'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '99'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['american', 'rock', '80s', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+9.83 dB'
'TXXX:replaygain_track_peak'                        '0.203874'

========================== row from database ==========================
                                              'id'  1353540
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/099 - Billy Squier - Rock Me Tonite.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  296
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  5934388
                                           'mtime'  1620737042
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 099 electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Billy Squier
                                     'tag_release'  Billboard Top 100 - 1984
                                       'tag_title'  Rock Me Tonite
                                             'bpm'  128.332
                                    'search_title'  'me':2 'rock':1 'tonite':3
                                   'search_artist'  'billy':1 'squier':2
                                  'search_release'  '100':3 '1984':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':15 'cppex':10,12 'electronic':2 'generic':3 'or':4 'pl':14 'radio':5 'rock':7,9 'set':11,13 'unsorted':6,8
                                    'search_combo'  '00poprockelectronic':10 '100':8C '1984':9C 'billboard':6C,24 'billy':4B 'cppex':19,21 'electronic':11 'generic':12 'me':2A 'or':13 'pl':23 'radio':14 'rock':1A,16,18 'set':20,22 'squier':5B 'tonite':3A 'top':7C 'unsorted':15,17
                                    'tag_tracknum'  99
                                      'num_images'  0
                                             'key'  8A
                                           '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-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['american', 'rock', '80s', 'hard rock', 'classic rock']
                                        'tag_date'  1984
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737041.5003095  (2021-05-11 14:44:01)
                             'size'  5934388