======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '205'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Moulin Rouge!'
                                           'title'  'Nature Boy'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '16'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '140'
                                             'key'  '4A'
                                        'acoustid'  '0f671c46-1155-4858-acca-1fca278073b5'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Moulin Rouge!'
'TBPM' (BPM (beats per minute))                     '140'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001-05-14'
'TIT2' (Title/songname/content description)         'Nature Boy'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Festival Records'
'TRCK' (Track number/Position in set)               '1/16'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'USIR10110320'
'TSSE' (Software/Hardware and settings used for encoding)  'Audio Converter, CBR 256 kbps'
'TXXX:ASIN'                                         'B00006I8UY'
'TXXX:Acoustid Id'                                  '0f671c46-1155-4858-acca-1fca278073b5'
'TXXX:Artists'                                      'David Bowie'
'TXXX:BARCODE'                                      '9397603338328'
'TXXX:CATALOGNUMBER'                                '333832'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'b0e3c1ed-d632-4869-8b7b-c5b8fd69942c'
'TXXX:MusicBrainz Album Release Country'            'AU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/soundtrack'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Release Group Id'                 '47a50465-3e12-3bd5-94b6-cfd0f68554bf'
'TXXX:MusicBrainz Release Track Id'                 'dbb8bc69-13bb-3e45-87d4-ff34affc6b32'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:originalyear'                                 '2001'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.06 dB'
'TXXX:replaygain_track_peak'                        '0.607309'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'9da3ee14-4c08-4e41-9301-cf0393628416')

========================== row from database ==========================
                                              'id'  646451
                                            'path'  /data/Music/Bulk/0soundtrack/1 [264kvbr]/01. David Bowie - Nature Boy.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  205
                                           'genre'  soundtrack-video
                                        'filesize'  6647975
                                           'mtime'  1620332482
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack 1 [264kvbr] 01. soundtrack video
                                      'tag_artist'  David Bowie
                                     'tag_release'  Moulin Rouge!
                                       'tag_title'  Nature Boy
                                             'bpm'  140.0
                                    'search_title'  'boy':2 'nature':1
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'moulin':1 'rouge':2
                                     'search_rest'  '01':5,6 '0soundtrack':1 '1':2 '264kvbr':3,4 'soundtrack':7 'video':8
                                    'search_combo'  '01':11,12 '0soundtrack':7 '1':8 '264kvbr':9,10 'bowie':4B 'boy':2A 'david':3B 'moulin':5C 'nature':1A 'rouge':6C 'soundtrack':13 'video':14
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620332482.0210476  (2021-05-06 22:21:22)
                             'size'  6647975