======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '432'
                                          'artist'  'The Velvet Underground'
                                     'text_people'  ''
                                         'release'  'The Velvet Underground & Nico'
                                           'title'  'Heroin'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'abstract', 'noise', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '11'
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;rock-cppex;rock-cppex-psychedelic'
                                             'bpm'  '143.8'
                                             'key'  '3B'
                                        'acoustid'  'ca587f9d-67a5-40f3-b588-7d61f31e306c'
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 0000069C 00000543 0000225C 0000202C 00055775 00061AAE 0000441E 00005CA9 '
 '00024A07 00027145')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'The Velvet Underground & Nico'
'TBPM' (BPM (beats per minute))                     '143.8'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'rock-cppex', 'rock-cppex-psychedelic']
'TDOR' (Original release time)                      '1967'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'Heroin'
'TKEY' (Initial key)                                '3B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Velvet Underground'
'TPE2' (Band/orchestra/accompaniment)               'The Velvet Underground'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Verve'
'TRCK' (Track number/Position in set)               '7/11'
'TSO2'                                              'Velvet Underground, The'
'TSOP' (Performer sort order)                       'Velvet Underground, The'
'TSRC' (ISRC (international standard recording code))  'USPR36602765/USPR36702765'
'TXXX:ASIN'                                         'B00000E5J1'
'TXXX:Acoustid Id'                                  'ca587f9d-67a5-40f3-b588-7d61f31e306c'
'TXXX:BARCODE'                                      '042282329028'
'TXXX:CATALOGNUMBER'                                '823 290-2'
'TXXX:MusicBrainz Album Artist Id'                  '94b0fb9d-a066-4823-b2ec-af1d324bcfcf'
'TXXX:MusicBrainz Album Id'                         '7a0fe329-9d54-4404-b493-853e8aaa1415'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '94b0fb9d-a066-4823-b2ec-af1d324bcfcf'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'alternative rock', 'abstract', 'noise', 'experimental']
'TXXX:lastfmtags'                                   ['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.59 dB'
'TXXX:replaygain_track_peak'                        '0.589871'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'022d8cbf-c503-4ae9-9050-cad982e15e21')

========================== row from database ==========================
                                              'id'  1410786
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Velvet Underground - Velvet Underground/The Velvet Underground & Nico/07 - heroin.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  432
                                           'genre'  rock-cppex-classic;rock-cppex;rock-cppex-psychedelic
                                        'filesize'  6927281
                                           'mtime'  1636301326
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 07 heroin rock cppex classic;rock cppex;rock cppex psychedelic
                                      'tag_artist'  The Velvet Underground
                                     'tag_release'  The Velvet Underground & Nico
                                       'tag_title'  Heroin
                                             'bpm'  143.8
                                    'search_title'  'heroin':1
                                   'search_artist'  'the':1 'underground':3 'velvet':2
                                  'search_release'  'nico':4 'the':1 'underground':3 'velvet':2
                                     'search_rest'  'classic':5,7 'classicprogpsy':1 'cppex':4,9,11 'heroin':2 'psychedelic':13 'rock':3,6,8,10,12
                                    'search_combo'  'classic':13,15 'classicprogpsy':9 'cppex':12,17,19 'heroin':1A,10 'nico':8C 'psychedelic':21 'rock':11,14,16,18,20 'the':2B,5C 'underground':4B,7C 'velvet':3B,6C
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']
                                        'tag_date'  1986
                                     'discogstags'  ['rock', 'alternative rock', 'abstract', 'noise', 'experimental']

============================== file details ==============================
                                           'mtime'  1636301326.0096543  (2021-11-07 17:08:46)
                             'size'  6927281