======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '382'
                                          'artist'  'Elvis Presley'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'A Little Less Conversation (JX'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '114.803'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '114.803'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TIT2' (Title/songname/content description)         'A Little Less Conversation (JX'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.10 dB'
'TXXX:replaygain_track_peak'                        '0.429789'

========================== row from database ==========================
                                              'id'  1297101
                                            'path'  /data/Music/Bulk/00poprockelectronic/Elvis Presley/01. A Little Less Conversation (Jxl Remix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  382
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  6118948
                                           'mtime'  1622659492
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 01. (Jxl Remix) rock pop early rocknroll
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  None
                                       'tag_title'  A Little Less Conversation (JX
                                             'bpm'  114.803
                                    'search_title'  'a':1 'conversation':4 'jx':5,6 'less':3 'little':2
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '01':2,3 'early':10 'jxl':4,5 'pop':9 'remix':6,7 'rock':8 'rocknroll':11
                                    'search_combo'  '00poprockelectronic':9 '01':10,11 'a':1A 'conversation':4A 'early':18 'elvis':7B 'jx':5A,6A 'jxl':12,13 'less':3A 'little':2A 'pop':17 'presley':8B 'remix':14,15 'rock':16 'rocknroll':19
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659492.4190295  (2021-06-02 20:44:52)
                             'size'  6118948