======================== unified (from filesystem) ========================
                                         'bitrate'  '204.0'
                                        'duration'  '314'
                                          'artist'  'Imogen Heap'
                                     'text_people'  ''
                                         'release'  'Speak for Yourself'
                                           'title'  'The Walk'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-4', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['indie', 'electronic', 'alternative', 'female vocalists', 'singer "
 "songwriter']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '95.348'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Speak for Yourself'
'TBPM' (BPM (beats per minute))                     '95.348'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'The Walk'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Imogen Heap'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'electronic', 'alternative', 'female vocalists', 'singer songwriter']
'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'                                       '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.44 dB'
'TXXX:replaygain_track_peak'                        '0.457637'

========================== row from database ==========================
                                              'id'  1361496
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Imogen Heap/08 The Walk.mp3
                                         'working'  None
                                         'bitrate'  204
                                    'duration_sec'  314
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  8013245
                                           'mtime'  1636910617
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip 08 electronic trip hop downtempo acid jazz
                                      'tag_artist'  Imogen Heap
                                     'tag_release'  Speak for Yourself
                                       'tag_title'  The Walk
                                             'bpm'  95.348
                                    'search_title'  'the':1 'walk':2
                                   'search_artist'  'heap':2 'imogen':1
                                  'search_release'  'for':2 'speak':1 'yourself':3
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 'acid':7 'downtempo':6 'electronic':3 'hop':5 'jazz':8 'trip':4
                                    'search_combo'  '00poprockelectronic':8 '00trip':9 'acid':14 'downtempo':13 'electronic':10 'for':6C 'heap':4B 'hop':12 'imogen':3B 'jazz':15 'speak':5C 'the':1A 'trip':11 'walk':2A 'yourself':7C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-4', '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-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'electronic', 'alternative', 'female vocalists', 'singer songwriter']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910617.126547  (2021-11-14 18:23:37)
                             'size'  8013245