======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '403'
                                          'artist'  'Kraftwerk'
                                     'text_people'  'Ralf Hütter'
                                         'release'  'Trans-Europe Express'
                                           'title'  'Metal On Metal'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'electronica', 'electro', 'electronic', 'synthpop']"
                                     'discogstags'  "['electronic', 'electro', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop'
                                             'bpm'  '108.996'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '7+0A5DE5B900AE6B28C4A5EC2346'
'COMM:iTunes_CDDB_IDs:eng'                          '7+0A5DE5B900AE6B28C4A5EC2346AC0356+807529'
'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 \x00 \x001\x001\x002\x000\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x007\x000\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x005\x004\x002\x001\x002\x001\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x001\x001\x002\x000\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x004\x007\x000\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x005\x004\x002\x001\x002\x001\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:K\x02\x0cè+\x03pI´\x13Ð\x0b\x85]\x13U'  PRIV(owner='WM/WMCollectionGroupID', data=b'K\x02\x0c\xe8+\x03pI\xb4\x13\xd0\x0b\x85]\x13U')
'PRIV:WM/WMCollectionID:K\x02\x0cè+\x03pI´\x13Ð\x0b\x85]\x13U'  PRIV(owner='WM/WMCollectionID', data=b'K\x02\x0c\xe8+\x03pI\xb4\x13\xd0\x0b\x85]\x13U')
'PRIV:WM/WMContentID:ÞÕòå\x99\x88ãH\x9b\x85\x08_¾Ô\x99Þ'  PRIV(owner='WM/WMContentID', data=b'\xde\xd5\xf2\xe5\x99\x88\xe3H\x9b\x85\x08_\xbe\xd4\x99\xde')
'TALB' (Album/Movie/Show title)                     'Trans-Europe Express'
'TBPM' (BPM (beats per minute))                     '108.996'
'TCOM' (Composer)                                   'Ralf Hütter'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-electropop or synthpop'
'TDRC' (Recording time)                             '1977'
'TENC' (Encoded by)                                 'iTunes v2.0'
'TIT2' (Title/songname/content description)         'Metal On Metal'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kraftwerk'
'TPE2' (Band/orchestra/accompaniment)               'Kraftwerk'
'TPUB' (Publisher)                                  'Astralwerks'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'electro', 'synth-pop']
'TXXX:lastfmtags'                                   ['german', 'electronica', 'electro', 'electronic', 'synthpop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.602466'

========================== row from database ==========================
                                              'id'  1358689
                                            'path'  /data/Music/Bulk/00poprockelectronic/Kraftwerk/trans-europe express/05 - metal on metal.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  403
                                           'genre'  electronic-we-electropop or synthpop
                                        'filesize'  8071403
                                           'mtime'  1628353775
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic trans europe express 05 metal on metal electronic electropop or synthpop
                                      'tag_artist'  Kraftwerk
                                     'tag_release'  Trans-Europe Express
                                       'tag_title'  Metal On Metal
                                             'bpm'  108.996
                                    'search_title'  'metal':1 'on':2
                                   'search_artist'  'kraftwerk':1
                                  'search_release'  'europe':2 'express':4 'trans':1 'transeurope':3
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'electropop':8 'europe':3 'express':4 'metal':5 'on':6 'or':9 'synthpop':10 'trans':2
                                    'search_combo'  '00poprockelectronic':8 'electronic':14 'electropop':15 'europe':5C,10 'express':7C,11 'kraftwerk':3B 'metal':1A,12 'on':2A,13 'or':16 'synthpop':17 'trans':4C,9 'transeurope':6C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['german', 'electronica', 'electro', 'electronic', 'synthpop']
                                        'tag_date'  1977
                                     'discogstags'  ['electronic', 'electro', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1628353775.0460434  (2021-08-07 18:29:35)
                             'size'  8071403