======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '202'
                                          'artist'  'REO Speedwagon'
                                     'text_people'  ''
                                         'release'  'Hi Infidelity'
                                           'title'  'Keep on Loving You'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'soft rock', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;set-pl-billboard'
                                             'bpm'  '87.370'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hi Infidelity'
'TBPM' (BPM (beats per minute))                     '87.370'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'set-pl-billboard']
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Keep on Loving You'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'REO Speedwagon'
'TRCK' (Track number/Position in set)               '2'
'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:discogstags'                                  ['rock', 'pop rock', 'classic rock']
'TXXX:lastfmtags'                                   ['80s', 'soft rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.61 dB'
'TXXX:replaygain_track_peak'                        '0.668861'

========================== row from database ==========================
                                              'id'  1289714
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0238 REO Speedwagon - Hi infidelity/Hi Infidelity-02-Keep on Loving You.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  202
                                           'genre'  rock-cppex-classic;set-pl-billboard
                                        'filesize'  8093169
                                           'mtime'  1636039375
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0238 infidelity 02 rock cppex classic;set pl billboard
                                      'tag_artist'  REO Speedwagon
                                     'tag_release'  Hi Infidelity
                                       'tag_title'  Keep on Loving You
                                             'bpm'  87.37
                                    'search_title'  'keep':1 'loving':3 'on':2 'you':4
                                   'search_artist'  'reo':1 'speedwagon':2
                                  'search_release'  'hi':1 'infidelity':2
                                     'search_rest'  '00poprockelectronic':1 '0238':5 '1000':4 'album':2 'billboard':14 'classic':9,11 'cppex':8 'infidelity':6 'pl':13 'rock':7 'set':10,12 'top':3
                                    'search_combo'  '00poprockelectronic':9 '0238':13 '1000':12 'album':10 'billboard':22 'classic':17,19 'cppex':16 'hi':7C 'infidelity':8C,14 'keep':1A 'loving':3A 'on':2A 'pl':21 'reo':5B 'rock':15 'set':18,20 'speedwagon':6B 'top':11 'you':4A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'soft rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1980
                                     'discogstags'  ['rock', 'pop rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636039375.4066963  (2021-11-04 16:22:55)
                             'size'  8093169