======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '140'
                                          'artist'  'Michael Jackson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Billie Jean (1981 Home Demo)'
                                           'quals'  ("['Q-HAP-3', '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-4', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'dance', 'rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '114.803'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '114.803'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1982'
'TIT2' (Title/songname/content description)         'Billie Jean (1981 Home Demo)'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Michael Jackson'
'TXXX:Mp3gain_minmax'                               '105,174'
'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'                                     '13'
'TXXX:lastfmtags'                                   ['80s', 'dance', 'rock', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.41 dB'
'TXXX:replaygain_track_peak'                        '0.361716'

========================== row from database ==========================
                                              'id'  1301849
                                            'path'  /data/Music/Bulk/00poprockelectronic/Michael Jackson/[1982] Thriller/Michael Jackson - Billie Jean (1981 Home Demo) - 13.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  140
                                           'genre'  rock-unsorted
                                        'filesize'  5612511
                                           'mtime'  1621696440
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1982] Thriller 13 rock unsorted
                                      'tag_artist'  Michael Jackson
                                     'tag_release'  None
                                       'tag_title'  Billie Jean (1981 Home Demo)
                                             'bpm'  114.803
                                    'search_title'  '1981':3,4 'billie':1 'demo':6,7 'home':5 'jean':2
                                   'search_artist'  'jackson':2 'michael':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1982':2,3 'rock':5 'thriller':4 'unsorted':6
                                    'search_combo'  '00poprockelectronic':10 '1981':3A,4A '1982':11,12 'billie':1A 'demo':6A,7A 'home':5A 'jackson':9B 'jean':2A 'michael':8B 'rock':14 'thriller':13 'unsorted':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-4', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'rock', 'pop']
                                        'tag_date'  1982
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696439.5172267  (2021-05-22 17:13:59)
                             'size'  5612511