======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '453'
                                          'artist'  'Vitamin String Quartet'
                                     'text_people'  'Led Zeplinn'
                                         'release'  'The String Quartet Tribute To Led Zeppelin'
                                           'title'  'Stairway To Heaven'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '11'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'set-cover or covered'
                                             'bpm'  '142.910'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 000011C5 00001468 0000CC84 0000D6A0 00032659 0005BD34 00008000 00008000 '
 '00013194 0000AB56')
'TALB' (Album/Movie/Show title)                     'The String Quartet Tribute To Led Zeppelin'
'TBPM' (BPM (beats per minute))                     '142.910'
'TCOM' (Composer)                                   'Led Zeplinn'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered', 'set-cover or covered']
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Stairway To Heaven'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Vitamin String Quartet'
'TPE2' (Band/orchestra/accompaniment)               'Vitamin String Quartet'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/11'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.82 dB'
'TXXX:replaygain_track_peak'                        '0.447641'

========================== row from database ==========================
                                              'id'  1340998
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/starway to heaven.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  453
                                           'genre'  set-cover or covered
                                        'filesize'  7278145
                                           'mtime'  1652398001
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] starway to heaven set cover or covered
                                      'tag_artist'  Vitamin String Quartet
                                     'tag_release'  The String Quartet Tribute To Led Zeppelin
                                       'tag_title'  Stairway To Heaven
                                             'bpm'  142.91
                                    'search_title'  'heaven':3 'stairway':1 'to':2
                                   'search_artist'  'quartet':3 'string':2 'vitamin':1
                                  'search_release'  'led':6 'quartet':3 'string':2 'the':1 'to':5 'tribute':4 'zeppelin':7
                                     'search_rest'  '00poprockelectronic':1 'cover':11 'covered':13 'files':5,6 'heaven':9 'loose':3,4 'or':12 'set':10 'starway':7 'to':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 'cover':24 'covered':26 'files':18,19 'heaven':3A,22 'led':12C 'loose':16,17 'or':25 'quartet':6B,9C 'set':23 'stairway':1A 'starway':20 'string':5B,8C 'the':7C 'to':2A,11C,21 'tribute':10C 'unsorted':15 'vitamin':4B 'zeppelin':13C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']
                                      'lastfmtags'  ['classical', 'cover', 'covers', 'instrumental', 'tribute', 'strings']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652398000.8950677  (2022-05-13 01:26:40)
                             'size'  7278145