======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '151'
                                          'artist'  'Elvis Presley'
                                     'text_people'  ''
                                         'release'  'The Top Ten Hits Disc 1'
                                           'title'  'Too Much'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '012'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '121.555'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Top Ten Hits Disc 1'
'TBPM' (BPM (beats per minute))                     '121.555'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Too Much'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TRCK' (Track number/Position in set)               '012'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.576333'

========================== row from database ==========================
                                              'id'  1446719
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-012 - Elvis Presley - Too Much.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  151
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  6071660
                                           'mtime'  1622659468
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 012 rock pop early rocknroll
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  The Top Ten Hits Disc 1
                                       'tag_title'  Too Much
                                             'bpm'  121.555
                                    'search_title'  'much':2 'too':1
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  '1':6 'disc':5 'hits':4 'ten':3 'the':1 'top':2
                                     'search_rest'  '00oldiepop':5 '1957':6 'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'rocknroll':10
                                    'search_combo'  '00oldiepop':15 '1':10C '1957':16 'country':14 'disc':9C 'early':19 'elvis':3B 'exotica':12 'hits':8C 'jazz':11 'much':2A 'oldies':13 'pop':18 'presley':4B 'rock':17 'rocknroll':20 'ten':7C 'the':5C 'too':1A 'top':6C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659468.281385  (2021-06-02 20:44:28)
                             'size'  6071660