======================== unified (from filesystem) ========================
                                         'bitrate'  '219.716'
                                        'duration'  '207'
                                          'artist'  'Indigo Girls'
                                     'text_people'  ''
                                         'release'  'GrandPassion & Elton John'
                                           'title'  'Mona Lisas And Mad Hatters (Elton John)'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['acoustic', 'rock', 'female vocalists', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '143.213'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'\x00\x9a\x01\x12\x00\x10\x01\x00\x00\x00\x00\x00\x00\x10\x02\x00\x00\x009\xcb\x00\x10\x03\x00\x00\x00yX\x00\x10\x04\x00\x00\x00\xb6\x12\x00\x10\x05\x00\x00\x00\xea~\x00\x10\x06\x00\x00\x0165\x00\x10\x07\x00\x00\x01\x9b\x00\x00\x10\x08\x00\x00\x01\xe8\xbe\x00\x10\t\x00\x00\x02\x13\xe8\x00\x10\n\x00\x00\x02n\xee\x00\x10\x0b\x00\x00\x02\xc3\xe7\x00\x10\x0c\x00\x00\x03\x02\x99\x00\x10\r\x00\x00\x03A\xa7\x00\x10\x0e\x00\x00\x03\xbac\x00\x10\x0f\x00\x00\x03\xf4\xe9\x00\x10\x10\x00\x00\x04;\x19\x00\x10\x11\x00\x00\x04{\xe7\x00\x10\x12\x00\x00\x05\x03\r\x00\x10\xaa\x00\x00\x05/y\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:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x007\x007\x007\x009\x004\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x005\x004\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x008\x001\x002\x006\x000\x006\x004\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x007\x007\x007\x009\x004\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x005\x004\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x008\x001\x002\x006\x000\x006\x004\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:ü\x90Ûí\x9eÄ\x81L\x94û\x84y\x99Rù\x16'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xfc\x90\xdb\xed\x9e\xc4\x81L\x94\xfb\x84y\x99R\xf9\x16')
'PRIV:WM/WMCollectionID:ü\x90Ûí\x9eÄ\x81L\x94û\x84y\x99Rù\x16'  PRIV(owner='WM/WMCollectionID', data=b'\xfc\x90\xdb\xed\x9e\xc4\x81L\x94\xfb\x84y\x99R\xf9\x16')
'PRIV:WM/WMContentID:\x9f)C\x9f\t\x91_L\x9f¦ìý\x86ª\x9c÷'  PRIV(owner='WM/WMContentID', data=b'\x9f)C\x9f\t\x91_L\x9f\xa6\xec\xfd\x86\xaa\x9c\xf7')
'TALB' (Album/Movie/Show title)                     'GrandPassion & Elton John'
'TBPM' (BPM (beats per minute))                     '143.213'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Mona Lisas And Mad Hatters (Elton John)'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '207280'
'TPE1' (Lead performer(s)/Soloist(s))               'Indigo Girls'
'TPE2' (Band/orchestra/accompaniment)               'Indigo Girls'
'TPUB' (Publisher)                                  'Epic'
'TSSE' (Software/Hardware and settings used for encoding)  'lame.exe -V 0 --vbr-new'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['acoustic', 'rock', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+9.74 dB'
'TXXX:replaygain_track_peak'                        '0.185811'

========================== row from database ==========================
                                              'id'  1297903
                                            'path'  /data/Music/Bulk/00poprockelectronic/VA - Elton John Covers/Indigo Girls - Mona Lisas And Mad Hatters (Elton John).mp3
                                         'working'  None
                                         'bitrate'  219
                                    'duration_sec'  207
                                           'genre'  ifs-songwriter
                                        'filesize'  5741925
                                           'mtime'  1637330777
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic VA Covers ifs songwriter
                                      'tag_artist'  Indigo Girls
                                     'tag_release'  GrandPassion & Elton John
                                       'tag_title'  Mona Lisas And Mad Hatters (Elton John)
                                             'bpm'  143.213
                                    'search_title'  'and':3 'elton':6,7 'hatters':5 'john':8,9 'lisas':2 'mad':4 'mona':1
                                   'search_artist'  'girls':2 'indigo':1
                                  'search_release'  'elton':2 'grand':4 'grandpassion':1 'john':3 'passion':5
                                     'search_rest'  '00poprockelectronic':1 'covers':3 'ifs':4 'songwriter':5 'va':2
                                    'search_combo'  '00poprockelectronic':17 'and':3A 'covers':19 'elton':6A,7A,13C 'girls':11B 'grand':15C 'grandpassion':12C 'hatters':5A 'ifs':20 'indigo':10B 'john':8A,9A,14C 'lisas':2A 'mad':4A 'mona':1A 'passion':16C 'songwriter':21 'va':18
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'rock', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330776.687309  (2021-11-19 15:06:16)
                             'size'  5741925