======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '186'
                                          'artist'  'The Ink Spots'
                                     'text_people'  ''
                                         'release'  'The Very Best of The Ink Spots'
                                           'title'  'Christopher Columbus'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'jazz', '40s', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '20'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '90.050'
                                             'key'  '8A'
                                        'acoustid'  '183563ca-6165-4387-a06b-2b590338527f'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Very Best of The Ink Spots'
'TBPM' (BPM (beats per minute))                     '90.050'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-salon or easy'
'TDOR' (Original release time)                      '2009'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Christopher Columbus'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Ink Spots'
'TPE2' (Band/orchestra/accompaniment)               'The Ink Spots'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '13/20'
'TSO2'                                              'Ink Spots, The'
'TSOP' (Performer sort order)                       'Ink Spots, The'
'TXXX:Acoustid Id'                                  '183563ca-6165-4387-a06b-2b590338527f'
'TXXX:Artists'                                      'The Ink Spots'
'TXXX:MusicBrainz Album Artist Id'                  '75f47650-8a52-494a-8334-c5279bc6db09'
'TXXX:MusicBrainz Album Id'                         '90bd1489-b2b5-44c5-8979-7fefa47c376c'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '75f47650-8a52-494a-8334-c5279bc6db09'
'TXXX:MusicBrainz Release Group Id'                 '6b5993ff-954f-43aa-a20a-aceb19390050'
'TXXX:MusicBrainz Release Track Id'                 'c0609f7e-cb55-3c1b-9364-bd8338d25a98'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['vocal jazz', 'jazz', '40s', 'oldies', 'swing']
'TXXX:originalyear'                                 '2009'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.773919'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'3d6bb5c9-34c6-4fb5-8c08-7c69bed27c80')

========================== row from database ==========================
                                              'id'  670865
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Ink Spots/Ink Spots - The Very Best of The Ink Spots_13 - Christopher Columbus.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  186
                                           'genre'  prerock-jb-jazz-soft-salon or easy
                                        'filesize'  7519531
                                           'mtime'  1620536367
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Spots_13 prerock jb jazz soft salon or easy
                                      'tag_artist'  The Ink Spots
                                     'tag_release'  The Very Best of The Ink Spots
                                       'tag_title'  Christopher Columbus
                                             'bpm'  90.05
                                    'search_title'  'christopher':1 'columbus':2
                                   'search_artist'  'ink':2 'spots':3 'the':1
                                  'search_release'  'best':3 'ink':5 'of':4 'spots':6 'the':1 'very':2
                                     'search_rest'  '13':6 'country':4 'easy':12 'exotica':2 'jazz':1 'jb':8 'oldies':3 'or':11 'prerock':7 'salon':10 'soft':9 'spots':5
                                    'search_combo'  '13':17 'best':8C 'christopher':1A 'columbus':2A 'country':15 'easy':23 'exotica':13 'ink':4B,10C 'jazz':12 'jb':19 'of':9C 'oldies':14 'or':22 'prerock':18 'salon':21 'soft':20 'spots':5B,11C,16 'the':3B,6C 'very':7C
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'jazz', '40s', 'oldies', 'swing']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536367.0941515  (2021-05-09 06:59:27)
                             'size'  7519531