======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '157'
                                          'artist'  'Franco Bonfanti'
                                     'text_people'  ''
                                         'release'  'Speedball Experience'
                                           'title'  "Ambiente Elegante (IT '74)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  '[\'italian progressive rock\', "70\'s"]'
                                     'discogstags'  "['funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '142.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000004AC 000005E8 00001031 000013E4 00015FBE 00015FA7 000059CD 0000622D '
 '00002710 00002710')
'PRIV:AverageLevel:*\x17\x00\x00'                   PRIV(owner='AverageLevel', data=b'*\x17\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Speedball Experience'
'TBPM' (BPM (beats per minute))                     '142.9'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TENC' (Encoded by)                                 'Tag&Rename 3.0.6'
'TIT2' (Title/songname/content description)         "Ambiente Elegante (IT '74)"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Franco Bonfanti'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'funk / soul'
'TXXX:lastfmtags'                                   ['italian progressive rock', "70's"]
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-5.87 dB'
'TXXX:replaygain_track_peak'                        '1.017546'

========================== row from database ==========================
                                              'id'  1524686
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Franco Bonfanti - Ambiente Elegante (IT _74).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  157
                                           'genre'  funk or soul
                                        'filesize'  3781585
                                           'mtime'  1628357827
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s _74) funk or soul
                                      'tag_artist'  Franco Bonfanti
                                     'tag_release'  Speedball Experience
                                       'tag_title'  Ambiente Elegante (IT '74)
                                             'bpm'  142.9
                                    'search_title'  '74':5,6 'ambiente':1 'elegante':2 'it':3,4
                                   'search_artist'  'bonfanti':2 'franco':1
                                  'search_release'  'experience':2 'speedball':1
                                     'search_rest'  '70':6 '74':8,9 'easy':4 'funk':2 'instr':5 'or':10 's':7 'soul':3 'swing':1
                                    'search_combo'  '70':16 '74':5A,6A,18,19 'ambiente':1A 'bonfanti':8B 'easy':14 'elegante':2A 'experience':10C 'franco':7B 'funk':12 'instr':15 'it':3A,4A 'or':20 's':17 'soul':13 'speedball':9C 'swing':11
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['italian progressive rock', "70's"]
                                        'tag_date'  1975
                                     'discogstags'  ['funk / soul']

============================== file details ==============================
                                           'mtime'  1628357826.9295633  (2021-08-07 19:37:06)
                             'size'  3781585