======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '281'
                                          'artist'  'Metallica'
                                     'text_people'  ''
                                         'release'  "Kill 'em All"
                                           'title'  'Jump in the Fire'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']"
                                     'discogstags'  "['thrash', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '10'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '89.5'
                                             'key'  '4A'
                                        'acoustid'  'f9412fdd-6d62-4f57-b0aa-7809e464d0ca'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "Kill 'em All"
'TBPM' (BPM (beats per minute))                     '89.5'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-heavy'
'TDOR' (Original release time)                      '1983'
'TDRC' (Recording time)                             '1989'
'TENC' (Encoded by)                                 'MP3Producer by MP3Developments.com'
'TIT2' (Title/songname/content description)         'Jump in the Fire'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Metallica'
'TPE2' (Band/orchestra/accompaniment)               'Metallica'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Vertigo'
'TRCK' (Track number/Position in set)               '4/10'
'TSO2'                                              'Metallica'
'TSOP' (Performer sort order)                       'Metallica'
'TSRC' (ISRC (international standard recording code))  'GBAMC8300004/QMKHM1600029'
'TXXX:Acoustid Id'                                  'f9412fdd-6d62-4f57-b0aa-7809e464d0ca'
'TXXX:Artists'                                      'Metallica'
'TXXX:BARCODE'                                      '042283814226'
'TXXX:CATALOGNUMBER'                                '838 142-2'
'TXXX:MusicBrainz Album Artist Id'                  '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Album Id'                         'abcc9a0c-169f-4c60-8322-4b3922fd3a5e'
'TXXX:MusicBrainz Album Release Country'            'CO'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
'TXXX:MusicBrainz Release Group Id'                 'f44f4f73-a714-31a1-a4b8-bfcaaf311f50'
'TXXX:MusicBrainz Release Track Id'                 '10da9347-a5ee-3f36-aadc-7ece274f0fb4'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['thrash', 'rock']
'TXXX:lastfmtags'                                   ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
'TXXX:originalyear'                                 '1983'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.55 dB'
'TXXX:replaygain_track_peak'                        '0.319524'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f939785e-589f-41b7-b07f-ac97c264dcf5')

========================== row from database ==========================
                                              'id'  1530606
                                            'path'  /data/Music/Bulk/00poprockelectronic/Metallica/Kill_ Em All/Metallica Kill _Em All 04 Jump In The Fire.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  281
                                           'genre'  eid-metal-heavy
                                        'filesize'  9071599
                                           'mtime'  1620311088
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Kill_ Em _Em 04 In The eid metal heavy
                                      'tag_artist'  Metallica
                                     'tag_release'  Kill 'em All
                                       'tag_title'  Jump in the Fire
                                             'bpm'  89.5
                                    'search_title'  'fire':4 'in':2 'jump':1 'the':3
                                   'search_artist'  'metallica':1
                                  'search_release'  'all':4 'em':2,3 'kill':1
                                     'search_rest'  '00poprockelectronic':1 'eid':7 'em':3,4 'heavy':9 'in':5 'kill':2 'metal':8 'the':6
                                    'search_combo'  '00poprockelectronic':10 'all':9C 'eid':16 'em':7C,8C,12,13 'fire':4A 'heavy':18 'in':2A,14 'jump':1A 'kill':6C,11 'metal':17 'metallica':5B 'the':3A,15
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['hard rock', 'rock', 'thrash metal', 'metal', 'heavy metal']
                                        'tag_date'  1989
                                     'discogstags'  ['thrash', 'rock']

============================== file details ==============================
                                           'mtime'  1620311087.5039253  (2021-05-06 16:24:47)
                             'size'  9071599