======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '190'
                                          'artist'  'Ohio Players'
                                     'text_people'  ''
                                         'release'  'Pleasure'
                                           'title'  "Walt's First Trip"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', 'rhythm and blues', 'soul', 'funk', '70s']"
                                     'discogstags'  "['funk / soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '16'
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '121.8'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000055D 000009AC 0000365A 000087D2 0001EA34 000292AC 000083F4 00008601 '
 '00029982 00010B72')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AF8 0000000000806D78 00000000 005D2001 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '16+6B0434A2CFDC5C77FEB2C7C302581457+8890718'
'TALB' (Album/Movie/Show title)                     'Pleasure'
'TBPM' (BPM (beats per minute))                     '121.8'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1972'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         "Walt's First Trip"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ohio Players'
'TRCK' (Track number/Position in set)               '4/16'
'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'                                  ['funk / soul', 'funk']
'TXXX:lastfmtags'                                   ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.623929'

========================== row from database ==========================
                                              'id'  1508679
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/ohio players/1973 1 pleasure/a4 - ohio players - walt_s first trip.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  190
                                           'genre'  funk or soul-funk
                                        'filesize'  6170500
                                           'mtime'  1620665739
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul ohio players 1973 1 pleasure a4 ohio players walt_s first trip funk or soul funk
                                      'tag_artist'  Ohio Players
                                     'tag_release'  Pleasure
                                       'tag_title'  Walt's First Trip
                                             'bpm'  121.8
                                    'search_title'  'first':4 's':2 'trip':5 'walt':1 'walts':3
                                   'search_artist'  'ohio':1 'players':2
                                  'search_release'  'pleasure':1
                                     'search_rest'  '1':7 '1973':6 'a4':9 'first':12 'funk':2 'ohio':4 'or':14 'players':5 'pleasure':8 's':11 'soul':3 'swing':1 'trip':13 'walt':10
                                    'search_combo'  '1':15 '1973':14 'a4':17 'first':4A,20 'funk':10 'ohio':6B,12 'or':22 'players':7B,13 'pleasure':8C,16 's':2A,19 'soul':11 'swing':9 'trip':5A,21 'walt':1A,18 'walts':3A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', '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-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'rhythm and blues', 'soul', 'funk', '70s']
                                        'tag_date'  1972
                                     'discogstags'  ['funk / soul', 'funk']

============================== file details ==============================
                                           'mtime'  1620665739.1928947  (2021-05-10 18:55:39)
                             'size'  6170500