======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '255'
                                          'artist'  'R.E.M.'
                                     'text_people'  ''
                                         'release'  'Out of Time'
                                           'title'  'Radio Song (feat. KRS-One)'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'indie', 'alternative', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '113.010'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Out of Time'
'TBPM' (BPM (beats per minute))                     '113.010'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Radio Song (feat. KRS-One)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'R.E.M.'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', 'indie', 'alternative', 'pop', '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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.99 dB'
'TXXX:replaygain_track_peak'                        '0.677644'

========================== row from database ==========================
                                              'id'  1297488
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0170 R.E.M. - Out of Time__cifsdc83.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  255
                                           'genre'  rock-pop
                                        'filesize'  6139589
                                           'mtime'  1620392551
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0170 Time__cifsdc83 rock pop
                                      'tag_artist'  R.E.M.
                                     'tag_release'  Out of Time
                                       'tag_title'  Radio Song (feat. KRS-One)
                                             'bpm'  113.01
                                    'search_title'  'feat':3,4 'krs':5 'krsone':7 'one':6 'radio':1 'song':2
                                   'search_artist'  'e':2 'm':3 'r':1 'rem':4
                                  'search_release'  'of':2 'out':1 'time':3
                                     'search_rest'  '00poprockelectronic':1 '0170':5 '1000':4 'album':2 'cifsdc83':7 'pop':9 'rock':8 'time':6 'top':3
                                    'search_combo'  '00poprockelectronic':15 '0170':19 '1000':18 'album':16 'cifsdc83':21 'e':9B 'feat':3A,4A 'krs':5A 'krsone':7A 'm':10B 'of':13C 'one':6A 'out':12C 'pop':23 'r':8B 'radio':1A 'rem':11B 'rock':22 'song':2A 'time':14C,20 'top':17
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4A
                                           '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-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'indie', 'alternative', 'pop', 'rock']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620392550.6169126  (2021-05-07 15:02:30)
                             'size'  6139589