======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '200'
                                          'artist'  'Ultrabeat'
                                     'text_people'  ''
                                         'release'  'Floorfillers Club Classics (Floor 3)'
                                           'title'  'Pretty Green Eyes'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['happy hardcore', 'vocal trance', 'dance', 'trance', 'club', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  '19'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'electronic-th-trance'
                                             'bpm'  '140.335'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 0000119D 00001316 00007B60'
'COMM:iTunNORM:eng'                                 (' 0000119D 00001316 00007B60 00006D88 000036E0 000036E0 00008000 00008000 '
 '0001445A 00012484')
'TALB' (Album/Movie/Show title)                     'Floorfillers Club Classics (Floor 3)'
'TBPM' (BPM (beats per minute))                     '140.335'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-trance'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'iTunes v6.0.3.5'
'TIT2' (Title/songname/content description)         'Pretty Green Eyes'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ultrabeat'
'TPOS' (Part of a set)                              '3/3'
'TRCK' (Track number/Position in set)               '17/19'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['happy hardcore', 'vocal trance', 'dance', 'trance', 'club', 'electronic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.34 dB'
'TXXX:replaygain_track_peak'                        '0.372220'

========================== row from database ==========================
                                              'id'  1294495
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/top, dance, club, best of, etc/17 - floorfillers club classics - pretty green eyes.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  200
                                           'genre'  electronic-th-trance
                                        'filesize'  4815225
                                           'mtime'  1621696835
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted top, dance, club, best of, etc 17 floorfillers club classics pretty green eyes electronic th trance
                                      'tag_artist'  Ultrabeat
                                     'tag_release'  Floorfillers Club Classics (Floor 3)
                                       'tag_title'  Pretty Green Eyes
                                             'bpm'  140.335
                                    'search_title'  'eyes':3 'green':2 'pretty':1
                                   'search_artist'  'ultrabeat':1
                                  'search_release'  '3':6,7 'classics':3 'club':2 'floor':4,5 'floorfillers':1
                                     'search_rest'  '00poprockelectronic':1 'best':9 'classics':14 'club':7,8 'dance':5,6 'electronic':18 'etc':12 'eyes':17 'floorfillers':13 'green':16 'of':10,11 'pretty':15 'th':19 'top':3,4 'trance':20 'unsorted':2
                                    'search_combo'  '00poprockelectronic':12 '3':10C,11C 'best':20 'classics':7C,25 'club':6C,18,19 'dance':16,17 'electronic':29 'etc':23 'eyes':3A,28 'floor':8C,9C 'floorfillers':5C,24 'green':2A,27 'of':21,22 'pretty':1A,26 'th':30 'top':14,15 'trance':31 'ultrabeat':4B 'unsorted':13
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['happy hardcore', 'vocal trance', 'dance', 'trance', 'club', 'electronic']
                                        'tag_date'  2006
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696834.508294  (2021-05-22 17:20:34)
                             'size'  4815225