======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '229'
                                          'artist'  'Cheap Trick'
                                     'text_people'  ''
                                         'release'  "MTV Rock Clasico 70's & 80's"
                                           'title'  'Dream Police'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['power pop', '80s', 'rock', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '15'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '91.971'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '15+4B8C3717800EB8160909B45E1'
'PRIV:AverageLevel:ó\x1c\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xf3\x1c\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'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:=òT\x00O`øH\x95\x80\x1d?\x01DN6'  PRIV(owner='WM/WMCollectionGroupID', data=b'=\xf2T\x00O`\xf8H\x95\x80\x1d?\x01DN6')
'PRIV:WM/WMCollectionID:=òT\x00O`øH\x95\x80\x1d?\x01DN6'  PRIV(owner='WM/WMCollectionID', data=b'=\xf2T\x00O`\xf8H\x95\x80\x1d?\x01DN6')
'PRIV:WM/WMContentID:»Î\x14Ô]ÉsG¾áê\x88ay\x8eá'     PRIV(owner='WM/WMContentID', data=b'\xbb\xce\x14\xd4]\xc9sG\xbe\xe1\xea\x88ay\x8e\xe1')
'TALB' (Album/Movie/Show title)                     "MTV Rock Clasico 70's & 80's"
'TBPM' (BPM (beats per minute))                     '91.971'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v4.9.0.17'
'TIT2' (Title/songname/content description)         'Dream Police'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cheap Trick'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '2/15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['power pop', '80s', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.42 dB'
'TXXX:replaygain_track_peak'                        '0.389701'

========================== row from database ==========================
                                              'id'  1317831
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/02 dream police(2).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  229
                                           'genre'  rock-cppex
                                        'filesize'  5514863
                                           'mtime'  1620737390
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 02 dream police(2) rock cppex
                                      'tag_artist'  Cheap Trick
                                     'tag_release'  MTV Rock Clasico 70's & 80's
                                       'tag_title'  Dream Police
                                             'bpm'  91.971
                                    'search_title'  'dream':1 'police':2
                                   'search_artist'  'cheap':1 'trick':2
                                  'search_release'  '70':4 '70s':6 '80':7 '80s':9 'clasico':3 'mtv':1 'rock':2 's':5,8
                                     'search_rest'  '00poprockelectronic':1 '2':9 'cppex':12 'dream':7 'files':5,6 'loose':3,4 'police':8 'police2':10 'rock':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 '2':22 '70':8C '70s':10C '80':11C '80s':13C 'cheap':3B 'clasico':7C 'cppex':25 'dream':1A,20 'files':18,19 'loose':16,17 'mtv':5C 'police':2A,21 'police2':23 'rock':6C,24 's':9C,12C 'trick':4B 'unsorted':15
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['power pop', '80s', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737389.6930237  (2021-05-11 14:49:49)
                             'size'  5514863