======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '52'
                                          'artist'  'Quincy Jones'
                                     'text_people'  ''
                                         'release'  'The Split'
                                           'title'  'End Title (vocal Arthur Prysock)'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-LOCALNESS-3', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['bossa nova', 'big band', 'jazz', 'soul', 'funk']"
                                     'discogstags'  "['score', 'stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '87.4'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Split'
'TBPM' (BPM (beats per minute))                     '87.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'End Title (vocal Arthur Prysock)'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Quincy Jones'
'TPE2' (Band/orchestra/accompaniment)               'Quincy Jones'
'TRCK' (Track number/Position in set)               '20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['score', 'stage & screen']
'TXXX:lastfmtags'                                   ['bossa nova', 'big band', 'jazz', 'soul', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.64 dB'
'TXXX:replaygain_track_peak'                        '0.635064'

========================== row from database ==========================
                                              'id'  726488
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Quincy jones -split, the (320 k)/20 end title (vocal arthur prysock).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  52
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2112073
                                           'mtime'  1620539085
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm jones split, the (320 20 end title arthur prysock) prerock jb jazz unsorted
                                      'tag_artist'  Quincy Jones
                                     'tag_release'  The Split
                                       'tag_title'  End Title (vocal Arthur Prysock)
                                             'bpm'  87.4
                                    'search_title'  'arthur':5 'end':1 'prysock':6,7 'title':2 'vocal':3,4
                                   'search_artist'  'jones':2 'quincy':1
                                  'search_release'  'split':2 'the':1
                                     'search_rest'  '20':7 '320':5,6 'arthur':10 'end':8 'jazz':15 'jb':14 'jones':1 'prerock':13 'prysock':11,12 'split':2,3 'the':4 'title':9 'unsorted':16
                                    'search_combo'  '20':18 '320':16,17 'arthur':5A,21 'end':1A,19 'jazz':26 'jb':25 'jones':9B,12 'prerock':24 'prysock':6A,7A,22,23 'quincy':8B 'split':11C,13,14 'the':10C,15 'title':2A,20 'unsorted':27 'vocal':3A,4A
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['bossa nova', 'big band', 'jazz', 'soul', 'funk']
                                        'tag_date'  1968
                                     'discogstags'  ['score', 'stage & screen']

============================== file details ==============================
                                           'mtime'  1620539085.1079392  (2021-05-09 07:44:45)
                             'size'  2112073