======================== unified (from filesystem) ========================
                                         'bitrate'  '192.946'
                                        'duration'  '281'
                                          'artist'  'Bar 9'
                                     'text_people'  ''
                                         'release'  'So Good / Dancin With the Devil'
                                           'title'  'So Good'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dubstep', 'electronic', 'bass', 'dub', 'british']"
                                     'discogstags'  "['electronic', 'dubstep']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '139.658'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000002BE 00000335 0000119A'
'COMM:iTunNORM:eng'                                 (' 000002BE 00000335 0000119A 000015D6 00004591 00004591 00008000 00008000 '
 '00006C06 0000755E')
'TALB' (Album/Movie/Show title)                     'So Good / Dancin With the Devil'
'TBPM' (BPM (beats per minute))                     '139.658'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'LAME'
'TIT2' (Title/songname/content description)         'So Good'
'TKEY' (Initial key)                                '7B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Bar 9'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'dubstep']
'TXXX:lastfmtags'                                   ['dubstep', 'electronic', 'bass', 'dub', 'british']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.27 dB'
'TXXX:replaygain_track_peak'                        '0.750674'

========================== row from database ==========================
                                              'id'  765382
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Bar 9 - SO GOOD.mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  281
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  7149394
                                           'mtime'  1620586901
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism SO GOOD hip hop or rnb or rap or turntablism
                                      'tag_artist'  Bar 9
                                     'tag_release'  So Good / Dancin With the Devil
                                       'tag_title'  So Good
                                             'bpm'  139.658
                                    'search_title'  'good':2 'so':1
                                   'search_artist'  '9':2 'bar':1
                                  'search_release'  'dancin':3 'devil':6 'good':2 'so':1 'the':5 'with':4
                                     'search_rest'  'good':6 'hip':7 'hiphop':1 'hop':8 'or':9 'rap':2 'rnb':3 'so':5 'turntablism':4
                                    'search_combo'  '9':4B 'bar':3B 'dancin':7C 'devil':10C 'good':2A,6C,16 'hip':17 'hiphop':11 'hop':18 'or':19 'rap':12 'rnb':13 'so':1A,5C,15 'the':9C 'turntablism':14 'with':8C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dubstep', 'electronic', 'bass', 'dub', 'british']
                                        'tag_date'  2009
                                     'discogstags'  ['electronic', 'dubstep']

============================== file details ==============================
                                           'mtime'  1620586901.3061666  (2021-05-09 21:01:41)
                             'size'  7149394