======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '110'
                                          'artist'  'Elvis Presley'
                                     'text_people'  ''
                                         'release'  'The Great Performances'
                                           'title'  'Teddy Bear'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'rock & roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '88.438'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Great Performances'
'TBPM' (BPM (beats per minute))                     '88.438'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Teddy Bear'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'rock & roll']
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:original release date'                        ['1990', '2004']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.474289'

========================== row from database ==========================
                                              'id'  1302590
                                            'path'  /data/Music/Bulk/00poprockelectronic/Elvis Presley/08. Teddy Bear.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  110
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  1765775
                                           'mtime'  1622659492
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 08. rock pop early rocknroll
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  The Great Performances
                                       'tag_title'  Teddy Bear
                                             'bpm'  88.438
                                    'search_title'  'bear':2 'teddy':1
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  'great':2 'performances':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '08':2,3 'early':6 'pop':5 'rock':4 'rocknroll':7
                                    'search_combo'  '00poprockelectronic':8 '08':9,10 'bear':2A 'early':13 'elvis':3B 'great':6C 'performances':7C 'pop':12 'presley':4B 'rock':11 'rocknroll':14 'teddy':1A 'the':5C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  2004
                                     'discogstags'  ['rock', 'pop', 'rock & roll']

============================== file details ==============================
                                           'mtime'  1622659492.4640322  (2021-06-02 20:44:52)
                             'size'  1765775