<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '215.671'
                                        'duration'  '331'
                                          'artist'  'Arctic Monkeys'
                                     'text_people'  ''
                                         'release'  "Whatever People Say I Am, That's What I'm Not"
                                           'title'  'A Certain Romance'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'alternative', 'british', 'indie rock', 'rock']"
                                     'discogstags'  "['rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '13'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted'
                                             'bpm'  '137.852'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d754f0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1524135"/>
'TALB' (Album/Movie/Show title)                     "Whatever People Say I Am, That's What I'm Not"
'TBPM' (BPM (beats per minute))                     '137.852'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-unsorted'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'A Certain Romance'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Arctic Monkeys'
'TRCK' (Track number/Position in set)               '13/13'
'TXXX:MusicBrainz Album Id'                         'fd3b81d6-a4d0-4cea-8421-e462b10cf465'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'ada7a83c-e3e1-40f1-93f9-3e73dbc9298a'
'TXXX:MusicBrainz TRM Id'                           '33acb8b3-a710-4690-8cca-28425115a1e5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'british', 'indie rock', 'rock']
'TXXX:q-bass'                                       '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.383389'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'7a7bc35c-c49c-408b-a860-23a8cfef6d43')

========================== row from database ==========================
                                              'id'  1524135
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Arctic Monkeys/Whatever People Say I Am, That_s What I_m Not/13 - a certain romance.mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  331
                                           'genre'  ifs-songwriter-indie-unsorted
                                        'filesize'  9215095
                                           'mtime'  1638554790
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos That_s I_m 13 certain romance ifs songwriter indie unsorted
                                      'tag_artist'  Arctic Monkeys
                                     'tag_release'  Whatever People Say I Am, That's What I'm Not
                                       'tag_title'  A Certain Romance
                                             'bpm'  137.852
                                    'search_title'  'a':1 'certain':2 'romance':3
                                   'search_artist'  'arctic':1 'monkeys':2
                                  'search_release'  'am':5,6 'i':4,11 'im':13 'm':12 'not':14 'people':2 's':8 'say':3 'that':7 'thats':9 'what':10 'whatever':1
                                     'search_rest'  '00singer':1 'certain':8 'eos':3 'i':6 'ifs':10 'indie':11 'm':7 'romance':9 's':5 'songwriter':2 'that':4 'unsorted':12
                                    'search_combo'  '00singer':20 'a':1A 'am':10C,11C 'arctic':4B 'certain':2A,27 'eos':22 'i':9C,16C,25 'ifs':29 'im':18C 'indie':30 'm':17C,26 'monkeys':5B 'not':19C 'people':7C 'romance':3A,28 's':13C,24 'say':8C 'songwriter':21 'that':12C,23 'thats':14C 'unsorted':31 'what':15C 'whatever':6C
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'british', 'indie rock', 'rock']
                                        'tag_date'  2006
                                     'discogstags'  ['rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1638554790.2845278  (2021-12-03 19:06:30)
                             'size'  9215095