======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '142'
                                          'artist'  'Creedence Clearwater Revival'
                                     'text_people'  ''
                                         'release'  'Creedence Clearwater Revival'
                                           'title'  'Fortunate Son'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', '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'  '23'
                                      'tracktotal'  '24'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '144.852'
                                             'key'  '9B'
                                        'acoustid'  'e344f789-6071-4f0a-b9b8-f273fcc1847f'
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))                     '144.852'
'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)         'Fortunate Son'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '142706'
'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)                              '5/6'
'TPUB' (Publisher)                                  'Fantasy'
'TRCK' (Track number/Position in set)               '23/24'
'TSO2'                                              'Creedence Clearwater Revival'
'TSOP' (Performer sort order)                       'Creedence Clearwater Revival'
'TSRC' (ISRC (international standard recording code))  'USC4R0920568/USFI86900065'
'TXXX:Acoustid Id'                                  'e344f789-6071-4f0a-b9b8-f273fcc1847f'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.45 dB'
'TXXX:replaygain_track_peak'                        '0.399733'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1fe620ed-32ee-4abf-ad9c-000eb6008022')

========================== row from database ==========================
                                              'id'  1337242
                                            'path'  /data/Music/Bulk/00poprockelectronic/Creedence Clearwater Revival/Box Set/Creedence Clearwater Revival [Box Set] (5 of 6)/23 - Creedence Clearwater Revival - Fortunate Son [Live and Studio].mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  142
                                           'genre'  rock-cppex-classic
                                        'filesize'  2296633
                                           'mtime'  1636039159
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Box Set [Box Set] (5 of 6) 23 [Live and Studio] rock cppex classic
                                      'tag_artist'  Creedence Clearwater Revival
                                     'tag_release'  Creedence Clearwater Revival
                                       'tag_title'  Fortunate Son
                                             'bpm'  144.852
                                    'search_title'  'fortunate':1 'son':2
                                   'search_artist'  'clearwater':2 'creedence':1 'revival':3
                                  'search_release'  'clearwater':2 'creedence':1 'revival':3
                                     'search_rest'  '00poprockelectronic':1 '23':11 '5':6,7 '6':9,10 'and':14 'box':2,4 'classic':19 'cppex':18 'live':12,13 'of':8 'rock':17 'set':3,5 'studio':15,16
                                    'search_combo'  '00poprockelectronic':9 '23':19 '5':14,15 '6':17,18 'and':22 'box':10,12 'classic':27 'clearwater':4B,7C 'cppex':26 'creedence':3B,6C 'fortunate':1A 'live':20,21 'of':16 'revival':5B,8C 'rock':25 'set':11,13 'son':2A 'studio':23,24
                                    'tag_tracknum'  23
                                      'num_images'  1
                                             'key'  9B
                                           '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-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['southern rock', 'rock', 'folk', '60s', 'classic rock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636039159.3447165  (2021-11-04 16:19:19)
                             'size'  2296633