======================== unified (from filesystem) ========================
                                         'bitrate'  '212.843'
                                        'duration'  '153'
                                          'artist'  'The Mills Brothers'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Yellow Bird'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'oldies', '30s', 'vocal jazz', '40s', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '15'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '100.455'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '100.455'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TCOP' (Copyright message)                          '℗ 2009 GAMC'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Yellow Bird'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mills Brothers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '9/15'
'TSOA' (Album sort order)                           "Forever '50s Volume 4"
'TSOP' (Performer sort order)                       'Mills Brothers'
'TSOT' (Title sort order)                           'Yellow Bird'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:iTunMOVI'                                     ('<?xml version="1.0" encoding="UTF-8"?>\n'
 '<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" '
 '"http://www.apple.com/DTDs/PropertyList-1.0.dtd">\n'
 '<plist version="1.0">\n'
 '<dict>\n'
 '\t<key>asset-info</key>\n'
 '\t<dict>\n'
 '\t\t<key>file-size</key>\n'
 '\t\t<integer>5626810</integer>\n'
 '\t\t<key>flavor</key>\n'
 '\t\t<string>2:256</string>\n'
 '\t</dict>\n'
 '</dict>\n'
 '</plist>\n')
'TXXX:lastfmtags'                                   ['jazz', 'oldies', '30s', 'vocal jazz', '40s', '50s']
'TXXX:purchaseaccount'                              'luc@gut.li'
'TXXX:purchasedate'                                 '2016-01-01 13:55:03'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.83 dB'
'TXXX:replaygain_track_peak'                        '0.505775'

========================== row from database ==========================
                                              'id'  1107585
                                            'path'  /data/Music/Bulk/sns/The Mills Brothers - Yellow Bird.mp3
                                         'working'  None
                                         'bitrate'  212
                                    'duration_sec'  153
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4260835
                                           'mtime'  1621044096
                                   'redo_metaread'  0
                                        'rest_str'   sns set pl shirleyspinoza;set pl mor
                                      'tag_artist'  The Mills Brothers
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Yellow Bird
                                             'bpm'  100.455
                                    'search_title'  'bird':2 'yellow':1
                                   'search_artist'  'brothers':3 'mills':2 'the':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'mor':8 'pl':3 'set':2,5,7 'shirleyspinoza':4,6 'sns':1
                                    'search_combo'  'bird':2A 'brothers':5B 'mills':4B 'mor':15 'pl':10 'set':9,12,14 'shirley':6C 'shirleyspinoza':11,13 'sns':8 'spinoza':7C 'the':3B 'yellow':1A
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'oldies', '30s', 'vocal jazz', '40s', '50s']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621044096.1601746  (2021-05-15 04:01:36)
                             'size'  4260835