======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '217'
                                          'artist'  'Beastie Boys'
                                     'text_people'  ''
                                         'release'  'Solid Gold Hits'
                                           'title'  "So What'cha Want"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['alternative', 'hip hop', 'rap', 'rock']"
                                     'discogstags'  "['hip hop', 'pop rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '15'
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '85.706'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000021D0 0000035E 0002893C'
'COMM:iTunNORM:eng'                                 (' 000021D0 0000035E 0002893C 0000A9B9 0001FE68 0001E5D0 00009872 000097C8 '
 '00010F39 00010F39')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000870 0000000000922380 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '15+B498E89C2B7BEDBF46682EA85B7AD585+6412437'
'TALB' (Album/Movie/Show title)                     'Solid Gold Hits'
'TBPM' (BPM (beats per minute))                     '85.706'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1992'
'TENC' (Encoded by)                                 'iTunes v6.0.1.3'
'TIT2' (Title/songname/content description)         "So What'cha Want"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Beastie Boys'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/15'
'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'                                  ['hip hop', 'pop rap']
'TXXX:lastfmtags'                                   ['alternative', 'hip hop', 'rap', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.68 dB'
'TXXX:replaygain_track_peak'                        '0.429044'

========================== row from database ==========================
                                              'id'  1502367
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beasty Boys/Solid Gold Hits/01 So What_cha Want.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  217
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  4428978
                                           'mtime'  1620567606
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Beasty 01 What_cha hip hop or rnb or rap or turntablism
                                      'tag_artist'  Beastie Boys
                                     'tag_release'  Solid Gold Hits
                                       'tag_title'  So What'cha Want
                                             'bpm'  85.706
                                    'search_title'  'cha':3 'so':1 'want':5 'what':2 'whatcha':4
                                   'search_artist'  'beastie':1 'boys':2
                                  'search_release'  'gold':2 'hits':3 'solid':1
                                     'search_rest'  '00poprockelectronic':1 'beasty':2 'cha':4 'hip':5 'hop':6 'or':7 'rap':9 'rnb':8 'turntablism':10 'what':3
                                    'search_combo'  '00poprockelectronic':11 'beastie':6B 'beasty':12 'boys':7B 'cha':3A,14 'gold':9C 'hip':15 'hits':10C 'hop':16 'or':17 'rap':19 'rnb':18 'so':1A 'solid':8C 'turntablism':20 'want':5A 'what':2A,13 'whatcha':4A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'hip hop', 'rap', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  ['hip hop', 'pop rap']

============================== file details ==============================
                                           'mtime'  1620567606.2272418  (2021-05-09 15:40:06)
                             'size'  4428978