======================== unified (from filesystem) ========================
                                         'bitrate'  '180.96'
                                        'duration'  '223'
                                          'artist'  'Ten Years After'
                                     'text_people'  ''
                                         'release'  'Essential'
                                           'title'  "I'd Love to Change the World"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues rock', 'blues', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-blues;rock-cppex'
                                             'bpm'  '115'
                                             'key'  '8A'
                                        'acoustid'  '09c653fa-f11b-4452-b131-65a1db6b18b4'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:CDDB Disc ID:XXX'                             'BF10B60E'
'COMM:ID3v1 Comment:XXX'                            'BF10B60E'
'TALB' (Album/Movie/Show title)                     'Essential'
'TBPM' (BPM (beats per minute))                     '115'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-early-blues', 'rock-cppex']
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         "I'd Love to Change the World"
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ten Years After'
'TPE2' (Band/orchestra/accompaniment)               'Ten Years After'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Chrysalis'
'TRCK' (Track number/Position in set)               '2/14'
'TSO2'                                              'Ten Years After'
'TSOP' (Performer sort order)                       'Ten Years After'
'TSRC' (ISRC (international standard recording code))  'GBAYE9800795/GBAYK0400087/GBAYK7100013/USLS50802008'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, VBR 2, Stereo, High quality'
'TXXX:Acoustid Id'                                  '09c653fa-f11b-4452-b131-65a1db6b18b4'
'TXXX:Artists'                                      'Ten Years After'
'TXXX:BARCODE'                                      '094632185723'
'TXXX:CATALOGNUMBER'                                '0946 3218572 3'
'TXXX:MusicBrainz Album Artist Id'                  '73faa89a-ee00-4e40-b68e-80e4891dbc45'
'TXXX:MusicBrainz Album Id'                         '453fbdbb-0cb0-4580-9798-7803fc7cd3a2'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '73faa89a-ee00-4e40-b68e-80e4891dbc45'
'TXXX:MusicBrainz Release Group Id'                 '21c1c23d-a5f6-3cae-aa34-634fa88f00e7'
'TXXX:MusicBrainz Release Track Id'                 '1db23fe2-85c7-476b-9948-14026e76cdf3'
'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', 'blues']
'TXXX:lastfmtags'                                   ['blues rock', 'blues', 'rock', 'hard rock', 'classic rock']
'TXXX:originalyear'                                 '1991'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.22 dB'
'TXXX:replaygain_track_peak'                        '0.604660'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'd8f6ba6b-eb57-43f4-9e7e-89ba88662467')

========================== row from database ==========================
                                              'id'  1516650
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ten Years After/Essential/Ten Years After - I_d Love to Change the World - 02.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  223
                                           'genre'  rock-pop-early-blues;rock-cppex
                                        'filesize'  5158581
                                           'mtime'  1620736496
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country I_d 02 rock pop early blues;rock cppex
                                      'tag_artist'  Ten Years After
                                     'tag_release'  Essential
                                       'tag_title'  I'd Love to Change the World
                                             'bpm'  115.0
                                    'search_title'  'change':6 'd':2 'i':1 'id':3 'love':4 'the':7 'to':5 'world':8
                                   'search_artist'  'after':3 'ten':1 'years':2
                                  'search_release'  'essential':1
                                     'search_rest'  'blues':10,12 'country':4 'cppex':14 'd':6 'early':9 'exotica':2 'i':5 'jazz':1 'oldies':3 'pop':8 'rock':7,11,13
                                    'search_combo'  'after':11B 'blues':22,24 'change':6A 'country':16 'cppex':26 'd':2A,18 'early':21 'essential':12C 'exotica':14 'i':1A,17 'id':3A 'jazz':13 'love':4A 'oldies':15 'pop':20 'rock':19,23,25 'ten':9B 'the':7A 'to':5A 'world':8A 'years':10B
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'blues', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1991
                                     'discogstags'  ['rock', 'blues']

============================== file details ==============================
                                           'mtime'  1620736495.8252635  (2021-05-11 14:34:55)
                             'size'  5158581