======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '210'
                                          'artist'  'Emf'
                                     'text_people'  ''
                                         'release'  "Greatest Hits Of The 90's CD4"
                                           'title'  'Unbelievable'
                                           'quals'  ("['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-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['90s', 'british', 'pop', 'rock', 'alternative', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '139.083'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Greatest Hits Of The 90's CD4"
'TBPM' (BPM (beats per minute))                     '139.083'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Unbelievable'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Emf'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['90s', 'british', 'pop', 'rock', 'alternative', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.09 dB'
'TXXX:replaygain_track_peak'                        '0.476402'

========================== row from database ==========================
                                              'id'  1506399
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/Greatest Hits Of The 90_s CD4 - 15 - Unbelievable - Emf.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  210
                                           'genre'  rock-pop
                                        'filesize'  8434373
                                           'mtime'  1620389184
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 90_s 15 rock pop
                                      'tag_artist'  Emf
                                     'tag_release'  Greatest Hits Of The 90's CD4
                                       'tag_title'  Unbelievable
                                             'bpm'  139.083
                                    'search_title'  'unbelievable':1
                                   'search_artist'  'emf':1
                                  'search_release'  '90':5 '90s':7 'cd4':8 'greatest':1 'hits':2 'of':3 's':6 'the':4
                                     'search_rest'  '00poprockelectronic':1 '90':3 '90s':2 'pop':6 'rock':5 's':4
                                    'search_combo'  '00poprockelectronic':11 '90':7C,13 '90s':9C,12 'cd4':10C 'emf':2B 'greatest':3C 'hits':4C 'of':5C 'pop':16 'rock':15 's':8C,14 'the':6C 'unbelievable':1A
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'british', 'pop', 'rock', 'alternative', 'electronic']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389184.1335924  (2021-05-07 14:06:24)
                             'size'  8434373