======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '37'
                                          'artist'  'The History of Unheard Music'
                                     'text_people'  ''
                                         'release'  'Drop It'
                                           'title'  'L.N. or Rigby'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['industrial', 'art pop', 'art rock', 'noise', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '143.4'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Drop It'
'TBPM' (BPM (beats per minute))                     '143.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'L.N. or Rigby'
'TKEY' (Initial key)                                '11A'
'TLEN' (Length)                                     '37877'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'The History of Unheard Music'
'TPE2' (Band/orchestra/accompaniment)               'The History of Unheard Music'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['industrial', 'art pop', 'art rock', 'noise', 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.558381'

========================== row from database ==========================
                                              'id'  732037
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The History of Unheard Music/Drop It/10_L.N. or Rigby.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  37
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  759680
                                           'mtime'  1622760088
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 10_L.N. electronic experimental oddness
                                      'tag_artist'  The History of Unheard Music
                                     'tag_release'  Drop It
                                       'tag_title'  L.N. or Rigby
                                             'bpm'  143.4
                                    'search_title'  'l':1 'ln':3 'n':2 'or':4 'rigby':5
                                   'search_artist'  'history':2 'music':5 'of':3 'the':1 'unheard':4
                                  'search_release'  'drop':1 'it':2
                                     'search_rest'  '10':1,4 'electronic':6 'experimental':7 'l':2 'ln':5 'n':3 'oddness':8
                                    'search_combo'  '10':13,16 'drop':11C 'electronic':18 'experimental':19 'history':7B 'it':12C 'l':1A,14 'ln':3A,17 'music':10B 'n':2A,15 'oddness':20 'of':8B 'or':4A 'rigby':5A 'the':6B 'unheard':9B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'art pop', 'art rock', 'noise', 'experimental']
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622760088.1521566  (2021-06-04 00:41:28)
                             'size'  759680