======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '120'
                                          'artist'  'Pat Boone'
                                     'text_people'  ''
                                         'release'  'Pat Boone: The Complete Fifties CD5'
                                           'title'  "That's How Much I Love You (1st Recording-Mono)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'country', 'pop', 'swing', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '25'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '133.933'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-275 POS 39'
'COMM:ID3v1 Comment:XXX'                            '58-275 POS 39'
'PRIV:AverageLevel:t\x15\x00\x00'                   PRIV(owner='AverageLevel', data=b't\x15\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Pat Boone: The Complete Fifties CD5'
'TBPM' (BPM (beats per minute))                     '133.933'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         "That's How Much I Love You (1st Recording-Mono)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pat Boone'
'TRCK' (Track number/Position in set)               '25'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', '60s', 'country', 'pop', 'swing', '50s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.420437'

========================== row from database ==========================
                                              'id'  1499292
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-275 - Pat Boone - That_s How Much I Love You.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  120
                                           'genre'  prerock-swing
                                        'filesize'  4807799
                                           'mtime'  1620562657
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 275 That_s prerock swing
                                      'tag_artist'  Pat Boone
                                     'tag_release'  Pat Boone: The Complete Fifties CD5
                                       'tag_title'  That's How Much I Love You (1st Recording-Mono)
                                             'bpm'  133.933
                                    'search_title'  '1st':9,10 'how':4 'i':6 'love':7 'mono':12 'much':5 'recording':11 'recordingmono':13 's':2 'that':1 'thats':3 'you':8
                                   'search_artist'  'boone':2 'pat':1
                                  'search_release'  'boone':2,3 'cd5':7 'complete':5 'fifties':6 'pat':1 'the':4
                                     'search_rest'  '00oldiepop':5 '1958':6 '275':8 '58':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':11 's':10 'swing':12 'that':9
                                    'search_combo'  '00oldiepop':27 '1958':28 '1st':9A,10A '275':30 '58':29 'boone':15B,17C,18C 'cd5':22C 'complete':20C 'country':26 'exotica':24 'fifties':21C 'how':4A 'i':6A 'jazz':23 'love':7A 'mono':12A 'much':5A 'oldies':25 'pat':14B,16C 'prerock':33 'recording':11A 'recordingmono':13A 's':2A,32 'swing':34 'that':1A,31 'thats':3A 'the':19C 'you':8A
                                    'tag_tracknum'  25
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['oldies', '60s', 'country', 'pop', 'swing', '50s']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562656.8782284  (2021-05-09 14:17:36)
                             'size'  4807799