======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '287'
                                          'artist'  'Firehouse'
                                     'text_people'  ''
                                         'release'  "90's Pop Hits"
                                           'title'  'Love Of A Lifetime'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-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-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['hair metal', 'rock', '80s', 'hard rock', 'classic rock']"
                                     'discogstags'  "['house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '121.555'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "90's Pop Hits"
'TBPM' (BPM (beats per minute))                     '121.555'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Love Of A Lifetime'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Firehouse'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['house', 'electronic']
'TXXX:lastfmtags'                                   ['hair metal', 'rock', '80s', 'hard rock', 'classic rock']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.96 dB'
'TXXX:replaygain_track_peak'                        '0.561986'

========================== row from database ==========================
                                              'id'  1321263
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/14. Firehouse - Love Of A Lifetime.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  287
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  4656942
                                           'mtime'  1620737017
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 14. electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Firehouse
                                     'tag_release'  90's Pop Hits
                                       'tag_title'  Love Of A Lifetime
                                             'bpm'  121.555
                                    'search_title'  'a':3 'lifetime':4 'love':1 'of':2
                                   'search_artist'  'firehouse':1
                                  'search_release'  '90':1 '90s':3 'hits':5 'pop':4 's':2
                                     'search_rest'  '00poprockelectronic':1 '14':3,4 '90s':2 'billboard':18 'cppex':13,15 'electronic':5 'generic':6 'or':7 'pl':17 'radio':8 'rock':10,12 'set':14,16 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':11 '14':13,14 '90':6C '90s':8C,12 'a':3A 'billboard':28 'cppex':23,25 'electronic':15 'firehouse':5B 'generic':16 'hits':10C 'lifetime':4A 'love':1A 'of':2A 'or':17 'pl':27 'pop':9C 'radio':18 'rock':20,22 's':7C 'set':24,26 'unsorted':19,21
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  3A
                                           '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['hair metal', 'rock', '80s', 'hard rock', 'classic rock']
                                        'tag_date'  1990
                                     'discogstags'  ['house', 'electronic']

============================== file details ==============================
                                           'mtime'  1620737017.191212  (2021-05-11 14:43:37)
                             'size'  4656942