======================== unified (from filesystem) ========================
                                         'bitrate'  '233.122'
                                        'duration'  '262'
                                          'artist'  'US3'
                                     'text_people'  ''
                                         'release'  'An Ordinary Day in an Unusual'
                                           'title'  "You Can't Hold Me Down"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['jazz', 'acid jazz', 'electronic', 'hip hop', 'funk']"
                                     'discogstags'  "['jazz', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '116.320'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'An Ordinary Day in an Unusual'
'TBPM' (BPM (beats per minute))                     '116.320'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         "You Can't Hold Me Down"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'US3'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'hip hop']
'TXXX:lastfmtags'                                   ['jazz', 'acid jazz', 'electronic', 'hip hop', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.456272'

========================== row from database ==========================
                                              'id'  1522249
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/US3/MBZ;#US3;#An Ordinary Day in an Unusual Place;#03;#You Can_t Hold Me Down.mp3
                                         'working'  None
                                         'bitrate'  233
                                    'duration_sec'  262
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  7645459
                                           'mtime'  1636911045
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip MBZ;#US3;#An Place;#03;#You Can_t electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  US3
                                     'tag_release'  An Ordinary Day in an Unusual
                                       'tag_title'  You Can't Hold Me Down
                                             'bpm'  116.32
                                    'search_title'  'can':2 'cant':4 'down':7 'hold':5 'me':6 't':3 'you':1
                                   'search_artist'  'us3':1
                                  'search_release'  'an':1 'day':3 'in':4 'ordinary':2 'unusual':5
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '03':10,13 'acid':22 'an':5,8 'can':15 'downtempo':21 'electronic':17 'hop':19 'jazz':23 'mbz':3,6 'or':20 'place':9,12 't':16 'trip':18 'us3':4,7 'you':11,14
                                    'search_combo'  '00poprockelectronic':14 '00trip':15 '03':23,26 'acid':35 'an':9C,18,21 'can':2A,28 'cant':4A 'day':11C 'down':7A 'downtempo':34 'electronic':30 'hold':5A 'hop':32 'in':12C 'jazz':36 'mbz':16,19 'me':6A 'or':33 'ordinary':10C 'place':22,25 't':3A,29 'trip':31 'unusual':13C 'us3':8B,17,20 'you':1A,24,27
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'acid jazz', 'electronic', 'hip hop', 'funk']
                                        'tag_date'  2001
                                     'discogstags'  ['jazz', 'hip hop']

============================== file details ==============================
                                           'mtime'  1636911044.8235662  (2021-11-14 18:30:44)
                             'size'  7645459