======================== unified (from filesystem) ========================
                                         'bitrate'  '172.352'
                                        'duration'  '200'
                                          'artist'  'Roberto De Roberti'
                                     'text_people'  ''
                                         'release'  'french tanguerooo'
                                           'title'  'Chitarra Romana'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '126.252'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '32 BPM\r\n'
'COMM:ID3v1 Comment:XXX'                            '32 BPM\r\n'
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:Xú¼-Ã\x1e\x1fB¡\x1bÒlðci\x8c'  PRIV(owner='WM/WMCollectionGroupID', data=b'X\xfa\xbc-\xc3\x1e\x1fB\xa1\x1b\xd2l\xf0ci\x8c')
'PRIV:WM/WMCollectionID:Xú¼-Ã\x1e\x1fB¡\x1bÒlðci\x8c'  PRIV(owner='WM/WMCollectionID', data=b'X\xfa\xbc-\xc3\x1e\x1fB\xa1\x1b\xd2l\xf0ci\x8c')
'PRIV:WM/WMContentID:!æ\x0f\x19ôãvJ\x81¥\x96\x8b\x18ÏlÀ'  PRIV(owner='WM/WMContentID', data=b'!\xe6\x0f\x19\xf4\xe3vJ\x81\xa5\x96\x8b\x18\xcfl\xc0')
'TALB' (Album/Movie/Show title)                     'french tanguerooo'
'TBPM' (BPM (beats per minute))                     '126.252'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1998'
'TENC' (Encoded by)                                 'FrenchTanguero'
'TIT2' (Title/songname/content description)         'Chitarra Romana'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Roberto De Roberti'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.51 dB'
'TXXX:replaygain_track_peak'                        '0.349543'

========================== row from database ==========================
                                              'id'  925052
                                            'path'  /data/Music/Bulk/00localcharacter/french tanguerooo/roberto de roberti - chitarra romana.mp3
                                         'working'  None
                                         'bitrate'  172
                                    'duration_sec'  200
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  4315008
                                           'mtime'  1620528394
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter roberto de roberti chitarra romana loc style tango or milonga
                                      'tag_artist'  Roberto De Roberti
                                     'tag_release'  french tanguerooo
                                       'tag_title'  Chitarra Romana
                                             'bpm'  126.252
                                    'search_title'  'chitarra':1 'romana':2
                                   'search_artist'  'de':2 'roberti':3 'roberto':1
                                  'search_release'  'french':1 'tanguerooo':2
                                     'search_rest'  'chitarra':4 'de':2 'loc':6 'milonga':10 'or':9 'roberti':3 'roberto':1 'romana':5 'style':7 'tango':8
                                    'search_combo'  'chitarra':1A,11 'de':4B,9 'french':6C 'loc':13 'milonga':17 'or':16 'roberti':5B,10 'roberto':3B,8 'romana':2A,12 'style':14 'tango':15 'tanguerooo':7C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528393.8222468  (2021-05-09 04:46:33)
                             'size'  4315008