======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '143'
                                          'artist'  'Champion Jack Dupree'
                                     'text_people'  ''
                                         'release'  'Shake Baby, Shake'
                                           'title'  'Lollipop Baby'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '22'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '120.042'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '22+F28DBABF5FA6F6A357862C85C'
'COMM:iTunes_CDDB_IDs:eng'                          '22+F28DBABF5FA6F6A357862C85C315E4EB+4467692'
'PRIV:AverageLevel:{\x18\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x18\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Shake Baby, Shake'
'TBPM' (BPM (beats per minute))                     '120.042'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TENC' (Encoded by)                                 'iTunes 9.2.1'
'TIT2' (Title/songname/content description)         'Lollipop Baby'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Champion Jack Dupree'
'TRCK' (Track number/Position in set)               '20/22'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.465039'

========================== row from database ==========================
                                              'id'  735892
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Champion Jack Dupree - Lollipop Baby.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  143
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3451617
                                           'mtime'  1620538085
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets prerock jb jazz unsorted
                                      'tag_artist'  Champion Jack Dupree
                                     'tag_release'  Shake Baby, Shake
                                       'tag_title'  Lollipop Baby
                                             'bpm'  120.042
                                    'search_title'  'baby':2 'lollipop':1
                                   'search_artist'  'champion':1 'dupree':3 'jack':2
                                  'search_release'  'baby':2,3 'shake':1
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6 'sweets':5 'unsorted':8
                                    'search_combo'  'baby':2A,7C,8C 'champion':3B 'country':12 'dupree':5B 'exotica':10 'jack':4B 'jazz':9 'jb':15 'lollipop':1A 'oldies':11 'prerock':14 'shake':6C 'sweets':13 'unsorted':16
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620538084.541122  (2021-05-09 07:28:04)
                             'size'  3451617