======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '262'
                                          'artist'  'Portishead'
                                     'text_people'  ''
                                         'release'  'Sour Times (Nobody Loves Me)'
                                           'title'  'Theme From "To Kill A Dead Man'
                                           '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-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'alternative', 'female vocalists', 'trip hop']"
                                     'discogstags'  "['electronic', 'jazz', 'rock', 'trip hop', 'downtempo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '136.092'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sour Times (Nobody Loves Me)'
'TBPM' (BPM (beats per minute))                     '136.092'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Theme From "To Kill A Dead Man'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Portishead'
'TRCK' (Track number/Position in set)               '5'
'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:discogstags'                                  ['electronic', 'jazz', 'rock', 'trip hop', 'downtempo']
'TXXX:lastfmtags'                                   ['electronic', 'alternative', 'female vocalists', 'trip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.48 dB'
'TXXX:replaygain_track_peak'                        '0.653262'

========================== row from database ==========================
                                              'id'  1335504
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Portishead/MBZ;#Portishead;#Sour Times (Nobody Loves Me);#05;#Theme From To Kill A Dead Man.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  262
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  5264513
                                           'mtime'  1636910878
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip MBZ;#Portishead;#Sour Me);#05;#Theme electronic trip hop downtempo acid jazz
                                      'tag_artist'  Portishead
                                     'tag_release'  Sour Times (Nobody Loves Me)
                                       'tag_title'  Theme From "To Kill A Dead Man
                                             'bpm'  136.092
                                    'search_title'  'a':5 'dead':6 'from':2 'kill':4 'man':7 'theme':1 'to':3
                                   'search_artist'  'portishead':1
                                  'search_release'  'loves':5 'me':6,7 'nobody':3,4 'sour':1 'times':2
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '05':10,13 'acid':19 'downtempo':18 'electronic':15 'hop':17 'jazz':20 'mbz':3,6 'me':9,12 'portishead':4,7 'sour':5,8 'theme':11,14 'trip':16
                                    'search_combo'  '00poprockelectronic':16 '00trip':17 '05':25,28 'a':5A 'acid':34 'dead':6A 'downtempo':33 'electronic':30 'from':2A 'hop':32 'jazz':35 'kill':4A 'loves':13C 'man':7A 'mbz':18,21 'me':14C,15C,24,27 'nobody':11C,12C 'portishead':8B,19,22 'sour':9C,20,23 'theme':1A,26,29 'times':10C 'to':3A 'trip':31
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'alternative', 'female vocalists', 'trip hop']
                                        'tag_date'  1995
                                     'discogstags'  ['electronic', 'jazz', 'rock', 'trip hop', 'downtempo']

============================== file details ==============================
                                           'mtime'  1636910877.8380485  (2021-11-14 18:27:57)
                             'size'  5264513