======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '88'
                                          'artist'  'outkast'
                                     'text_people'  ''
                                         'release'  'stankonia'
                                           'title'  '?'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'pop', 'hip hop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '97.9'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'stankonia'
'TBPM' (BPM (beats per minute))                     '97.9'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         '?'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'outkast'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'pop', 'hip hop', 'funk']
'TXXX:original release date'                        ['2000', '2000']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.497654'

========================== row from database ==========================
                                              'id'  1329640
                                            'path'  /data/Music/Bulk/00poprockelectronic/Outkast/Stankonia/Outkast - Question.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  88
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  1421194
                                           'mtime'  1620571668
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Outkast Stankonia Outkast Question hip hop or rnb or rap or turntablism
                                      'tag_artist'  outkast
                                     'tag_release'  stankonia
                                       'tag_title'  ?
                                             'bpm'  97.9
                                    'search_title'  
                                   'search_artist'  'outkast':1
                                  'search_release'  'stankonia':1
                                     'search_rest'  '00poprockelectronic':1 'hip':5 'hop':6 'or':7 'outkast':2 'question':4 'rap':9 'rnb':8 'stankonia':3 'turntablism':10
                                    'search_combo'  '00poprockelectronic':3 'hip':7 'hop':8 'or':9 'outkast':1B,4 'question':6 'rap':11 'rnb':10 'stankonia':2C,5 'turntablism':12
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'pop', 'hip hop', 'funk']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620571668.1182008  (2021-05-09 16:47:48)
                             'size'  1421194