======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '251'
                                          'artist'  'Portishead'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'alternative', 'female vocalists', 'trip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '93.933'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '93.933'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Portishead'
'TXXX:Mp3gain_minmax'                               '000,188'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'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'                                   ['electronic', 'alternative', 'female vocalists', 'trip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.386401'

========================== row from database ==========================
                                              'id'  1328067
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/portishead - Nobody Loves me (Massive Attack mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  251
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  4018417
                                           'mtime'  1636911454
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] portishead Nobody Loves me (Massive Attack mix) electronic trip hop downtempo acid jazz
                                      'tag_artist'  Portishead
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  93.933
                                    'search_title'  None
                                   'search_artist'  'portishead':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'acid':20 'attack':13 'downtempo':19 'electronic':16 'files':5,6 'hop':18 'jazz':21 'loose':3,4 'loves':9 'massive':11,12 'me':10 'mix':14,15 'nobody':8 'portishead':7 'trip':17 'unsorted':2
                                    'search_combo'  '00poprockelectronic':2 'acid':21 'attack':14 'downtempo':20 'electronic':17 'files':6,7 'hop':19 'jazz':22 'loose':4,5 'loves':10 'massive':12,13 'me':11 'mix':15,16 'nobody':9 'portishead':1B,8 'trip':18 'unsorted':3
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'alternative', 'female vocalists', 'trip hop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911454.1071706  (2021-11-14 18:37:34)
                             'size'  4018417