======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '362'
                                          'artist'  'Michael Jackson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Wanna Be Startin' Something"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'dance', 'rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'rock-unsorted;set-pl-billboard'
                                             'bpm'  '97.788'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '97.788'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1982'
'TIT2' (Title/songname/content description)         "Wanna Be Startin' Something"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Michael Jackson'
'TXXX:Mp3gain_minmax'                               '071,204'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'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:Tracknum'                                     '01'
'TXXX:lastfmtags'                                   ['80s', 'dance', 'rock', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.84 dB'
'TXXX:replaygain_track_peak'                        '0.392941'

========================== row from database ==========================
                                              'id'  1510133
                                            'path'  /data/Music/Bulk/00poprockelectronic/Michael Jackson/[1982] Thriller/Michael Jackson - Wanna Be Startin_ Something - 01.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  362
                                           'genre'  rock-unsorted;set-pl-billboard
                                        'filesize'  14498321
                                           'mtime'  1621696449
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1982] Thriller Startin_ 01 rock unsorted;set pl billboard
                                      'tag_artist'  Michael Jackson
                                     'tag_release'  None
                                       'tag_title'  Wanna Be Startin' Something
                                             'bpm'  97.788
                                    'search_title'  'be':2 'something':5 'startin':3,4 'wanna':1
                                   'search_artist'  'jackson':2 'michael':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1982':2,3 'billboard':12 'pl':11 'rock':6 'set':8,10 'startin':5 'thriller':4 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':8 '1982':9,10 'be':2A 'billboard':19 'jackson':7B 'michael':6B 'pl':18 'rock':13 'set':15,17 'something':5A 'startin':3A,4A,12 'thriller':11 'unsorted':14,16 'wanna':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           '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-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'rock', 'pop']
                                        'tag_date'  1982
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696448.8601568  (2021-05-22 17:14:08)
                             'size'  14498321