======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '179'
                                          'artist'  'William Shatner'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Lucy with Diamonds'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-1', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'comedy', 'spoken word', 'pop', 'canadian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'entertaining-unsorted'
                                             'bpm'  '94.5'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '94.5'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Lucy with Diamonds'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'William Shatner'
'TXXX:Mp3gain_minmax'                               '143,194'
'TXXX:Mp3gain_undo'                                 '-003,-003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['rock', 'comedy', 'spoken word', 'pop', 'canadian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.14 dB'
'TXXX:replaygain_track_peak'                        '1.634449'

========================== row from database ==========================
                                              'id'  1330953
                                            'path'  /data/Music/Bulk/00spent/William Shatner/William_Shatner-Lucy_with_Diamonds.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  179
                                           'genre'  entertaining-unsorted
                                        'filesize'  2508630
                                           'mtime'  1620647426
                                   'redo_metaread'  0
                                        'rest_str'   00spent William_Shatner Lucy_with_Diamonds entertaining unsorted
                                      'tag_artist'  William Shatner
                                     'tag_release'  None
                                       'tag_title'  Lucy with Diamonds
                                             'bpm'  94.5
                                    'search_title'  'diamonds':3 'lucy':1 'with':2
                                   'search_artist'  'shatner':2 'william':1
                                  'search_release'  
                                     'search_rest'  '00spent':1 'diamonds':6 'entertaining':7 'lucy':4 'shatner':3 'unsorted':8 'william':2 'with':5
                                    'search_combo'  '00spent':6 'diamonds':3A,11 'entertaining':12 'lucy':1A,9 'shatner':5B,8 'unsorted':13 'william':4B,7 'with':2A,10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'comedy', 'spoken word', 'pop', 'canadian']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620647426.0400476  (2021-05-10 13:50:26)
                             'size'  2508630