======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '128'
                                          'artist'  'Syl Johnson'
                                     'text_people'  ''
                                         'release'  'Complete Mythology(Disc 2)'
                                           'title'  'I Resign'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fip', 'soul', 'blues', 'rhythm and blues', 'funk', '7soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '85.453'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Complete Mythology(Disc 2)'
'TBPM' (BPM (beats per minute))                     '85.453'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'I Resign'
'TKEY' (Initial key)                                '2B'
'TMED' (Media type)                                 'Vinyl, CD, All Media, Box Set LP, Album, Reissue'
'TPE1' (Lead performer(s)/Soloist(s))               'Syl Johnson'
'TPE2' (Band/orchestra/accompaniment)               'Syl Johnson'
'TPOS' (Part of a set)                              '2/4'
'TPUB' (Publisher)                                  ('Numero Group, Numero Group, Numero Group, Numero Group, Numero Group, Numero '
 'Group, Numero Group, Numero Group, Numero Group')
'TRCK' (Track number/Position in set)               '21'
'TXXX:Chapter'                                      'Dresses Too Short'
'TXXX:DISCOGS_ARTIST_LINK'                          'Syl%20Johnson'
'TXXX:DISCOGS_LABEL_LINK'                           'Numero%20Group'
'TXXX:DISCOGS_RELEASED'                             '19 Oct 2010'
'TXXX:DISCOGS_RELEASE_MONTH'                        '10'
'TXXX:Discogs_Artist_Name'                          'Syl Johnson'
'TXXX:Discogs_Catalog'                              ('NUM032, NUM032.1, NUM032.2, NUM032.3, NUM032.4, NUM032.5, NUM032.6, '
 'NUM032.CD, NUM032.BOOK')
'TXXX:Discogs_Country'                              'US'
'TXXX:Discogs_Date'                                 '2010-10-19'
'TXXX:Discogs_Release_ID'                           '2517062'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:Style'                                        'Rhythm & Blues, Soul, Funk'
'TXXX:lastfmtags'                                   ['fip', 'soul', 'blues', 'rhythm and blues', 'funk', '7soul']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.99 dB'
'TXXX:replaygain_track_peak'                        '0.297551'

========================== row from database ==========================
                                              'id'  1267461
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Syl Johnson-Complete Mythology (2010)/221. i resign.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  128
                                           'genre'  funk or soul-funk
                                        'filesize'  5166565
                                           'mtime'  1620665708
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul (2010) 221. resign funk or soul funk
                                      'tag_artist'  Syl Johnson
                                     'tag_release'  Complete Mythology(Disc 2)
                                       'tag_title'  I Resign
                                             'bpm'  85.453
                                    'search_title'  'i':1 'resign':2
                                   'search_artist'  'johnson':2 'syl':1
                                  'search_release'  '2':5,6 'complete':1 'disc':3 'mythology':2 'mythologydisc':4
                                     'search_rest'  '2010':4,5 '221':6,7 'funk':2 'or':9 'resign':8 'soul':3 'swing':1
                                    'search_combo'  '2':9C,10C '2010':14,15 '221':16,17 'complete':5C 'disc':7C 'funk':12 'i':1A 'johnson':4B 'mythology':6C 'mythologydisc':8C 'or':19 'resign':2A,18 'soul':13 'swing':11 'syl':3B
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['fip', 'soul', 'blues', 'rhythm and blues', 'funk', '7soul']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665708.3803275  (2021-05-10 18:55:08)
                             'size'  5166565