======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '151'
                                          'artist'  'Chuck Berry'
                                     'text_people'  ''
                                         'release'  'After School Session'
                                           'title'  "Berry Pickin'"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'blues', 'rock', 'classic rock']"
                                     'discogstags'  "['rock', 'rock & roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '12'
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '145.476'
                                             'key'  '9A'
                                        'acoustid'  '574f91cc-7003-498e-b6cb-8ba53dbb037f'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'After School Session'
'TBPM' (BPM (beats per minute))                     '145.476'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1957'
'TDRC' (Recording time)                             '1957-05-01'
'TIT2' (Title/songname/content description)         "Berry Pickin'"
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Chuck Berry'
'TPE2' (Band/orchestra/accompaniment)               'Chuck Berry'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Chess'
'TRCK' (Track number/Position in set)               '8/12'
'TSO2'                                              'Berry, Chuck'
'TSOP' (Performer sort order)                       'Berry, Chuck'
'TXXX:Acoustid Id'                                  '574f91cc-7003-498e-b6cb-8ba53dbb037f'
'TXXX:CATALOGNUMBER'                                'LP 1426'
'TXXX:MusicBrainz Album Artist Id'                  '592a3b6d-c42b-4567-99c9-ecf63bd66499'
'TXXX:MusicBrainz Album Id'                         '461de79f-61b5-4435-b0a6-1ad4a6450706'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '592a3b6d-c42b-4567-99c9-ecf63bd66499'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'rock & roll']
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', 'blues', 'rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.19 dB'
'TXXX:replaygain_track_peak'                        '0.513728'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1f7756c2-fc60-4a5d-bcd2-151371654ff5')

========================== row from database ==========================
                                              'id'  1519864
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Chuck Berry - 1957 - After School Session (Vinyl)/08. Chuck Berry - Berry Pickin_.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  151
                                           'genre'  rock-cppex-classic
                                        'filesize'  6074034
                                           'mtime'  1636038696
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 1957 (Vinyl) 08. Pickin_ rock cppex classic
                                      'tag_artist'  Chuck Berry
                                     'tag_release'  After School Session
                                       'tag_title'  Berry Pickin'
                                             'bpm'  145.476
                                    'search_title'  'berry':1 'pickin':2,3
                                   'search_artist'  'berry':2 'chuck':1
                                  'search_release'  'after':1 'school':2 'session':3
                                     'search_rest'  '08':5,6 '1957':2 'classic':10 'classicprogpsy':1 'cppex':9 'pickin':7 'rock':8 'vinyl':3,4
                                    'search_combo'  '08':13,14 '1957':10 'after':6C 'berry':1A,5B 'chuck':4B 'classic':18 'classicprogpsy':9 'cppex':17 'pickin':2A,3A,15 'rock':16 'school':7C 'session':8C 'vinyl':11,12
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'blues', 'rock', 'classic rock']
                                        'tag_date'  1957
                                     'discogstags'  ['rock', 'rock & roll']

============================== file details ==============================
                                           'mtime'  1636038695.9227068  (2021-11-04 16:11:35)
                             'size'  6074034