======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '170'
                                          'artist'  'Syl Johnson'
                                     'text_people'  ''
                                         'release'  'Complete Mythology(Disc 3)'
                                           'title'  'Take Me Back'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
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 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fip', 'soul', 'blues', 'rhythm and blues', 'funk', '7soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '122.733'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Complete Mythology(Disc 3)'
'TBPM' (BPM (beats per minute))                     '122.733'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Take Me Back'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Syl Johnson'
'TPE2' (Band/orchestra/accompaniment)               'Syl Johnson'
'TPOS' (Part of a set)                              '3/4'
'TPUB' (Publisher)                                  'Numero'
'TRCK' (Track number/Position in set)               '8'
'TXXX:DISCOGS_ARTIST_LINK'                          'Syl%20Johnson'
'TXXX:DISCOGS_COUNTRY'                              'US'
'TXXX:DISCOGS_LABEL_LINK'                           'Numero%20Group'
'TXXX:DISCOGS_RELEASED'                             '19 Oct 2010'
'TXXX:DISCOGS_RELEASE_ID'                           '2517062'
'TXXX:DISCOGS_RELEASE_MONTH'                        '10'
'TXXX:Discogs_Catalog'                              ['NUM032',
 'NUM032.1',
 'NUM032.2',
 'NUM032.3',
 'NUM032.4',
 'NUM032.5',
 'NUM032.6',
 'NUM032.CD',
 'NUM032.BOOK']
'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'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.364551'

========================== row from database ==========================
                                              'id'  1248309
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Syl Johnson-Complete Mythology (2010)/308. take me back.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  170
                                           'genre'  funk or soul-funk
                                        'filesize'  6868631
                                           'mtime'  1620665710
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul (2010) 308. take me back funk or soul funk
                                      'tag_artist'  Syl Johnson
                                     'tag_release'  Complete Mythology(Disc 3)
                                       'tag_title'  Take Me Back
                                             'bpm'  122.733
                                    'search_title'  'back':3 'me':2 'take':1
                                   'search_artist'  'johnson':2 'syl':1
                                  'search_release'  '3':5,6 'complete':1 'disc':3 'mythology':2 'mythologydisc':4
                                     'search_rest'  '2010':4,5 '308':6,7 'back':10 'funk':2 'me':9 'or':11 'soul':3 'swing':1 'take':8
                                    'search_combo'  '2010':15,16 '3':10C,11C '308':17,18 'back':3A,21 'complete':6C 'disc':8C 'funk':13 'johnson':5B 'me':2A,20 'mythology':7C 'mythologydisc':9C 'or':22 'soul':14 'swing':12 'syl':4B 'take':1A,19
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', '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-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['fip', 'soul', 'blues', 'rhythm and blues', 'funk', '7soul']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665709.7961671  (2021-05-10 18:55:09)
                             'size'  6868631