======================== unified (from filesystem) ========================
                                         'bitrate'  '131.67'
                                        'duration'  '189'
                                          'artist'  'Barbecue Bob'
                                     'text_people'  ''
                                         'release'  'The Slide Guitar: Bottles, Knives & Steel'
                                           'title'  '[untitled]'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['americana', 'classic blues', 'acoustic blues', 'piedmont blues', 'blues', "
 "'folk']")
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '19'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '148'
                                             'key'  '9B'
                                        'acoustid'  '40009210-1b64-4159-b368-09c38756391a'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000000C9 000000D0 0000051D'
'COMM:iTunNORM:eng'                                 (' 000000C9 000000D0 0000051D 00000593 0001F4A3 0001F4A3 00001E93 00001FC9 '
 '0001F4BA 0001F4BA')
'TALB' (Album/Movie/Show title)                     'The Slide Guitar: Bottles, Knives & Steel'
'TBPM' (BPM (beats per minute))                     '148'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         '[untitled]'
'TKEY' (Initial key)                                '9B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Barbecue Bob'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'CBS'
'TRCK' (Track number/Position in set)               '2/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Barbecue Bob'
'TXXX:ASIN'                                         'B000002752'
'TXXX:Acoustid Id'                                  '40009210-1b64-4159-b368-09c38756391a'
'TXXX:Artists'                                      'Barbecue Bob'
'TXXX:CATALOGNUMBER'                                '46218'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '1a2745e9-bdd3-44b4-904c-17fb58cc8db2'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '46a5e33c-7a72-485f-b3eb-8f09fc54fe2f'
'TXXX:MusicBrainz Release Group Id'                 '02460fb2-931b-3a02-beb2-2f1dec5a3f18'
'TXXX:MusicBrainz Release Track Id'                 '746cd253-5e54-39ce-a1f8-b9f1f0f12457'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['americana',
 'classic blues',
 'acoustic blues',
 'piedmont blues',
 'blues',
 'folk']
'TXXX:originalyear'                                 '1990'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.94 dB'
'TXXX:replaygain_track_peak'                        '0.813400'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8363191a-90c7-4617-8936-f3ed0bc73d49')

========================== row from database ==========================
                                              'id'  1387127
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/slide guitar (1927-1965) - bottles, knives & steel/Barbecue Bob (Robert Hicks) - (untitled).mp3
                                         'working'  None
                                         'bitrate'  131
                                    'duration_sec'  189
                                           'genre'  prerock-jb-blues
                                        'filesize'  3158912
                                           'mtime'  1620402821
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country slide guitar (1927 1965) bottles, knives steel (Robert Hicks) (untitled) prerock jb blues
                                      'tag_artist'  Barbecue Bob
                                     'tag_release'  The Slide Guitar: Bottles, Knives & Steel
                                       'tag_title'  [untitled]
                                             'bpm'  148.0
                                    'search_title'  'untitled':1,2
                                   'search_artist'  'barbecue':1 'bob':2
                                  'search_release'  'bottles':5,6 'guitar':3,4 'knives':7 'slide':2 'steel':8 'the':1
                                     'search_rest'  '1927':7,8 '1965':9,10 'blues':23 'bottles':11,12 'country':4 'exotica':2 'guitar':6 'hicks':17,18 'jazz':1 'jb':22 'knives':13 'oldies':3 'prerock':21 'robert':15,16 'slide':5 'steel':14 'untitled':19,20
                                    'search_combo'  '1927':19,20 '1965':21,22 'barbecue':3B 'blues':35 'bob':4B 'bottles':9C,10C,23,24 'country':16 'exotica':14 'guitar':7C,8C,18 'hicks':29,30 'jazz':13 'jb':34 'knives':11C,25 'oldies':15 'prerock':33 'robert':27,28 'slide':6C,17 'steel':12C,26 'the':5C 'untitled':1A,2A,31,32
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['americana', 'classic blues', 'acoustic blues', 'piedmont blues', 'blues', 'folk']
                                        'tag_date'  1990
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402820.889509  (2021-05-07 17:53:40)
                             'size'  3158912