======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '109'
                                          'artist'  'Johnny Cash'
                                     'text_people'  ''
                                         'release'  'Greatest Hits, Vol. 1'
                                           'title'  'Five Feet High And Rising'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-country'
                                             'bpm'  '142.608'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-437 POS 76'
'COMM:ID3v1 Comment:XXX'                            '59-437 POS 76'
'PRIV:AverageLevel:F\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'F\x0e\x00\x00')
'PRIV:PeakValue:\x83~\x00\x00'                      PRIV(owner='PeakValue', data=b'\x83~\x00\x00')
'TALB' (Album/Movie/Show title)                     'Greatest Hits, Vol. 1'
'TBPM' (BPM (beats per minute))                     '142.608'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Five Feet High And Rising'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.12 dB'
'TXXX:replaygain_track_peak'                        '0.698918'

========================== row from database ==========================
                                              'id'  1437425
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-437 - Johnny Cash - Five Feet High And Rising.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  109
                                           'genre'  prerock-country
                                        'filesize'  4371600
                                           'mtime'  1621627916
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 437 prerock country
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  Greatest Hits, Vol. 1
                                       'tag_title'  Five Feet High And Rising
                                             'bpm'  142.608
                                    'search_title'  'and':4 'feet':2 'five':1 'high':3 'rising':5
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  '1':6 'greatest':1 'hits':2,3 'vol':4,5
                                     'search_rest'  '00oldiepop':5 '1959':6 '437':8 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':18 '1':13C '1959':19 '437':21 '59':20 'and':4A 'cash':7B 'country':17 'exotica':15 'feet':2A 'five':1A 'greatest':8C 'high':3A 'hits':9C,10C 'jazz':14 'johnny':6B 'oldies':16 'prerock':22 'rising':5A 'vol':11C,12C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627915.7775388  (2021-05-21 22:11:55)
                             'size'  4371600