======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '211'
                                          'artist'  'REM'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Summer turns to high'
                                           'quals'  ("['Q-HAP-2', '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-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'alternative rock', 'alternative', 'indie', '90s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '84.773'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.773'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TIT2' (Title/songname/content description)         'Summer turns to high'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'REM'
'TXXX:Mp3gain_minmax'                               '079,204'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'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:lastfmtags'                                   ['rock', 'alternative rock', 'alternative', 'indie', '90s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.42 dB'
'TXXX:replaygain_track_peak'                        '0.396673'

========================== row from database ==========================
                                              'id'  1297053
                                            'path'  /data/Music/Bulk/00poprockelectronic/R.E.M/REM - Summer turns to high.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  211
                                           'genre'  rock-unsorted
                                        'filesize'  5086166
                                           'mtime'  1637158454
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic R.E.M rock unsorted
                                      'tag_artist'  REM
                                     'tag_release'  None
                                       'tag_title'  Summer turns to high
                                             'bpm'  84.773
                                    'search_title'  'high':4 'summer':1 'to':3 'turns':2
                                   'search_artist'  'rem':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'e':3 'm':4 'r':2 'rem':5 'rock':6 'unsorted':7
                                    'search_combo'  '00poprockelectronic':6 'e':8 'high':4A 'm':9 'r':7 'rem':5B,10 'rock':11 'summer':1A 'to':3A 'turns':2A 'unsorted':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'alternative rock', 'alternative', 'indie', '90s']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637158454.1904404  (2021-11-17 15:14:14)
                             'size'  5086166