======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '243'
                                          'artist'  'Kenny Burrell'
                                     'text_people'  ''
                                         'release'  'Out Of The Cool'
                                           'title'  'Midnight Blue'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'jazz guitar', 'guitar', 'blues', 'bebop']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1963'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '145.9'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Out Of The Cool'
'TBPM' (BPM (beats per minute))                     '145.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1963'
'TIT2' (Title/songname/content description)         'Midnight Blue'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '000000243104'
'TPE1' (Lead performer(s)/Soloist(s))               'Kenny Burrell'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz', 'jazz guitar', 'guitar', 'blues', 'bebop']
'TXXX:q-bass'                                       '4'
'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'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.36 dB'
'TXXX:replaygain_track_peak'                        '0.709647'

========================== row from database ==========================
                                              'id'  1521078
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/VV.AA. Out of the Cool. Vol. 01/03 - Kenny Burrell - Midnight Blue [__Midnight Blue__ Blue Note BLP 4123].mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  243
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  9728247
                                           'mtime'  1620539123
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm VV.AA. of the Cool. Vol. 01 03 [__Midnight Blue__ Note BLP 4123] prerock jb jazz unsorted
                                      'tag_artist'  Kenny Burrell
                                     'tag_release'  Out Of The Cool
                                       'tag_title'  Midnight Blue
                                             'bpm'  145.9
                                    'search_title'  'blue':2 'midnight':1
                                   'search_artist'  'burrell':2 'kenny':1
                                  'search_release'  'cool':4 'of':2 'out':1 'the':3
                                     'search_rest'  '4123':15,16 'aa':2 'blp':14 'blue':12 'cool':6,7 'jazz':19 'jb':18 'midnight':10,11 'note':13 'of':4 'prerock':17 'the':5 'unsorted':20 'vol':8,9 'vv':1 'vvaa':3
                                    'search_combo'  '4123':23,24 'aa':10 'blp':22 'blue':2A,20 'burrell':4B 'cool':8C,14,15 'jazz':27 'jb':26 'kenny':3B 'midnight':1A,18,19 'note':21 'of':6C,12 'out':5C 'prerock':25 'the':7C,13 'unsorted':28 'vol':16,17 'vv':9 'vvaa':11
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'jazz guitar', 'guitar', 'blues', 'bebop']
                                        'tag_date'  1963
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620539122.6892116  (2021-05-09 07:45:22)
                             'size'  9728247