======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '174'
                                          'artist'  'Ohio Players'
                                     'text_people'  ''
                                         'release'  'Honey'
                                           'title'  'Love Rollercoaster'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', 'rhythm and blues', 'soul', 'funk', '70s']"
                                     'discogstags'  "['electronic', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk;set-pl-billboard'
                                             'bpm'  '116.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000078D 000007C2 00003AF1 00004539 00012E8D 00025263 000083C6 00008277 '
 '00008268 00008268')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000B28 00000000007531C8 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '17+7F39E5649D75C0F6ABF3D6955519215D+750910'
'TALB' (Album/Movie/Show title)                     'Honey'
'TBPM' (BPM (beats per minute))                     '116.9'
'TCON' (Content type, a.k.a. Genre)                 ['funk or soul-funk', 'set-pl-billboard']
'TDRC' (Recording time)                             '1975'
'TENC' (Encoded by)                                 'iTunes v6.0.4'
'TIT2' (Title/songname/content description)         'Love Rollercoaster'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ohio Players'
'TPE2' (Band/orchestra/accompaniment)               'Ohio Players'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'disco']
'TXXX:lastfmtags'                                   ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
'TXXX:q-bass'                                       '3'
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.07 dB'
'TXXX:replaygain_track_peak'                        '0.538960'

========================== row from database ==========================
                                              'id'  1113744
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/ohio players/1975 1 honey/b2 ohio players - love rollercoaster.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  174
                                           'genre'  funk or soul-funk;set-pl-billboard
                                        'filesize'  4209610
                                           'mtime'  1620665758
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul ohio players 1975 1 honey b2 ohio players love rollercoaster funk or soul funk;set pl billboard
                                      'tag_artist'  Ohio Players
                                     'tag_release'  Honey
                                       'tag_title'  Love Rollercoaster
                                             'bpm'  116.9
                                    'search_title'  'love':1 'rollercoaster':2
                                   'search_artist'  'ohio':1 'players':2
                                  'search_release'  'honey':1
                                     'search_rest'  '1':7 '1975':6 'b2':9 'billboard':18 'funk':2,13,15 'honey':8 'love':10 'ohio':4 'or':12 'pl':17 'players':5 'rollercoaster':11 'set':14,16 'soul':3 'swing':1
                                    'search_combo'  '1':12 '1975':11 'b2':14 'billboard':23 'funk':7,18,20 'honey':5C,13 'love':1A,15 'ohio':3B,9 'or':17 'pl':22 'players':4B,10 'rollercoaster':2A,16 'set':19,21 'soul':8 'swing':6
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
                                        'tag_date'  1975
                                     'discogstags'  ['electronic', 'disco']

============================== file details ==============================
                                           'mtime'  1620665757.9192896  (2021-05-10 18:55:57)
                             'size'  4209610