======================== unified (from filesystem) ========================
                                         'bitrate'  '191.978'
                                        'duration'  '224'
                                          'artist'  'Avril Lavigne'
                                     'text_people'  ''
                                         'release'  'Let Go'
                                           'title'  "I'm With You"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['female vocalists', 'canadian', 'pop rock', 'pop', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'set-pl-billboard'
                                             'bpm'  '146.000'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Let Go'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-billboard'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         "I'm With You"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Avril Lavigne'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:discogstags'                                  ['rock', 'alternative rock', 'pop rock']
'TXXX:lastfmtags'                                   ['female vocalists', 'canadian', 'pop rock', 'pop', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                        '+7.91 dB'
'TXXX:replaygain_track_peak'                        '0.153783'

========================== row from database ==========================
                                              'id'  1512708
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Avril Lavigne-Let Go-04-I_m With You.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  224
                                           'genre'  set-pl-billboard
                                        'filesize'  5377961
                                           'mtime'  1652397942
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 04 I_m set pl billboard
                                      'tag_artist'  Avril Lavigne
                                     'tag_release'  Let Go
                                       'tag_title'  I'm With You
                                             'bpm'  146.0
                                    'search_title'  'i':1 'im':3 'm':2 'with':4 'you':5
                                   'search_artist'  'avril':1 'lavigne':2
                                  'search_release'  'go':2 'let':1
                                     'search_rest'  '00poprockelectronic':1 'billboard':11 'files':5,6 'i':7 'loose':3,4 'm':8 'pl':10 'set':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'avril':6B 'billboard':20 'files':14,15 'go':9C 'i':1A,16 'im':3A 'lavigne':7B 'let':8C 'loose':12,13 'm':2A,17 'pl':19 'set':18 'unsorted':11 'with':4A 'you':5A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['female vocalists', 'canadian', 'pop rock', 'pop', 'rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock', 'alternative rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1652397942.102011  (2022-05-13 01:25:42)
                             'size'  5377961