======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '153'
                                          'artist'  'Creedence Clearwater Revival'
                                     'text_people'  ''
                                         'release'  'Creedence Clearwater Revival'
                                           'title'  "Lookin' Out My Back Door"
                                           '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-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['southern rock', 'rock', 'folk', '60s', 'classic rock']"
                                     'discogstags'  "['rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '19'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '105.642'
                                             'key'  '6A'
                                        'acoustid'  '61ed1aa7-7bc4-42a1-bb98-2c6906dcae8f'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Creedence Clearwater Revival'
'TBPM' (BPM (beats per minute))                     '105.642'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001-11-12'
'TIT2' (Title/songname/content description)         "Lookin' Out My Back Door"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '153861'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Creedence Clearwater Revival'
'TPE2' (Band/orchestra/accompaniment)               'Creedence Clearwater Revival'
'TPOS' (Part of a set)                              '4/6'
'TPUB' (Publisher)                                  'Fantasy'
'TRCK' (Track number/Position in set)               '5/19'
'TSO2'                                              'Creedence Clearwater Revival'
'TSOP' (Performer sort order)                       'Creedence Clearwater Revival'
'TSRC' (ISRC (international standard recording code))  'DEA319906889/USC4R0817630/USC4R0920575/USFI87000056'
'TXXX:Acoustid Id'                                  '61ed1aa7-7bc4-42a1-bb98-2c6906dcae8f'
'TXXX:MusicBrainz Album Artist Id'                  '109958eb-a335-4c5e-907e-597ff4c6af46'
'TXXX:MusicBrainz Album Id'                         'f009b439-038d-4650-a387-fefaf77a3746'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '109958eb-a335-4c5e-907e-597ff4c6af46'
'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', 'classic rock']
'TXXX:lastfmtags'                                   ['southern rock', 'rock', 'folk', '60s', 'classic rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.11 dB'
'TXXX:replaygain_track_peak'                        '0.454073'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'962dc1be-6d73-4c4b-990e-01193319e34b')

========================== row from database ==========================
                                              'id'  1517087
                                            'path'  /data/Music/Bulk/00poprockelectronic/Creedence Clearwater Revival/Box Set/Creedence Clearwater Revival [Box Set] (4 of 6)/05 - Creedence Clearwater Revival - Lookin_ Out My Back Door.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  153
                                           'genre'  rock-cppex-classic
                                        'filesize'  2475102
                                           'mtime'  1636039148
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Box Set [Box Set] (4 of 6) 05 Lookin_ rock cppex classic
                                      'tag_artist'  Creedence Clearwater Revival
                                     'tag_release'  Creedence Clearwater Revival
                                       'tag_title'  Lookin' Out My Back Door
                                             'bpm'  105.642
                                    'search_title'  'back':5 'door':6 'lookin':1,2 'my':4 'out':3
                                   'search_artist'  'clearwater':2 'creedence':1 'revival':3
                                  'search_release'  'clearwater':2 'creedence':1 'revival':3
                                     'search_rest'  '00poprockelectronic':1 '4':6,7 '6':9,10 'box':2,4 'classic':14 'cppex':13 'lookin':11 'of':8 'rock':12 'set':3,5
                                    'search_combo'  '00poprockelectronic':13 '4':18,19 '6':21,22 'back':5A 'box':14,16 'classic':26 'clearwater':8B,11C 'cppex':25 'creedence':7B,10C 'door':6A 'lookin':1A,2A,23 'my':4A 'of':20 'out':3A 'revival':9B,12C 'rock':24 'set':15,17
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['southern rock', 'rock', 'folk', '60s', 'classic rock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636039148.4200249  (2021-11-04 16:19:08)
                             'size'  2475102