======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '72'
                                          'artist'  'Vashti Bunyan'
                                     'text_people'  ''
                                         'release'  'Just Another Diamond Day'
                                           'title'  'Hebridean Sun'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'freak folk', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '141.4'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Just Another Diamond Day'
'TBPM' (BPM (beats per minute))                     '141.4'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Hebridean Sun'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Vashti Bunyan'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['indie', 'freak folk', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.15 dB'
'TXXX:replaygain_track_peak'                        '0.541955'

========================== row from database ==========================
                                              'id'  1275266
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Vashti Bunyan/Just Another Diamond Day/vashti bunyan - just another diamond day - 10 - hebridean sun.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  72
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  1744727
                                           'mtime'  1621699536
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos vashti bunyan just another diamond day 10 hebridean sun ifs songwriter folk
                                      'tag_artist'  Vashti Bunyan
                                     'tag_release'  Just Another Diamond Day
                                       'tag_title'  Hebridean Sun
                                             'bpm'  141.4
                                    'search_title'  'hebridean':1 'sun':2
                                   'search_artist'  'bunyan':2 'vashti':1
                                  'search_release'  'another':2 'day':4 'diamond':3 'just':1
                                     'search_rest'  '00singer':1 'another':7 'bunyan':5 'day':9 'diamond':8 'eos':3 'folk':13 'hebridean':10 'ifs':12 'just':6 'songwriter':2 'sun':11 'vashti':4
                                    'search_combo'  '00singer':9 'another':6C,15 'bunyan':4B,13 'day':8C,17 'diamond':7C,16 'eos':11 'folk':21 'hebridean':1A,18 'ifs':20 'just':5C,14 'songwriter':10 'sun':2A,19 'vashti':3B,12
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'freak folk', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  1970
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1621699535.776168  (2021-05-22 18:05:35)
                             'size'  1744727