======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '334'
                                          'artist'  'Gregorian'
                                     'text_people'  ''
                                         'release'  'Masters Of Chant Chapter V'
                                           'title'  'Heroes'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'Q-PIANO-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['new age', 'choir', 'celtic', 'ambient']"
                                     'discogstags'  "['electronic', 'pop', 'new age', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '15'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'set-cover or covered'
                                             'bpm'  '120.902'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000589 00000558 00003143'
'COMM:iTunNORM:eng'                                 (' 00000589 00000558 00003143 00003C98 00037173 00035E21 00008000 00008000 '
 '0001E2FE 0001EAE2')
'TALB' (Album/Movie/Show title)                     'Masters Of Chant Chapter V'
'TBPM' (BPM (beats per minute))                     '120.902'
'TCON' (Content type, a.k.a. Genre)                 'set-cover or covered'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Heroes'
'TKEY' (Initial key)                                '9B'
'TLAN' (Language(s))                                'German'
'TPE1' (Lead performer(s)/Soloist(s))               'Gregorian'
'TPE2' (Band/orchestra/accompaniment)               'Gregorian'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'pop', 'new age', 'vocal']
'TXXX:lastfmtags'                                   ['new age', 'choir', 'celtic', 'ambient']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '0.534955'

========================== row from database ==========================
                                              'id'  1296901
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Gregorian/01_gregorian_-_heroes.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  334
                                           'genre'  set-cover or covered
                                        'filesize'  8103585
                                           'mtime'  1620349576
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 01_gregorian_ _heroes set cover covered
                                      'tag_artist'  Gregorian
                                     'tag_release'  Masters Of Chant Chapter V
                                       'tag_title'  Heroes
                                             'bpm'  120.902
                                    'search_title'  'heroes':1
                                   'search_artist'  'gregorian':1
                                  'search_release'  'chant':3 'chapter':4 'masters':1 'of':2 'v':5
                                     'search_rest'  '00poprockelectronic':1 '01':3 'cover':7 'covered':8 'gregorian':4 'heroes':5 'set':6 'unsorted':2
                                    'search_combo'  '00poprockelectronic':8 '01':10 'chant':5C 'chapter':6C 'cover':14 'covered':15 'gregorian':2B,11 'heroes':1A,12 'masters':3C 'of':4C 'set':13 'unsorted':9 'v':7C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'Q-PLAY-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['new age', 'choir', 'celtic', 'ambient']
                                        'tag_date'  2006
                                     'discogstags'  ['electronic', 'pop', 'new age', 'vocal']

============================== file details ==============================
                                           'mtime'  1620349576.070186  (2021-05-07 03:06:16)
                             'size'  8103585