======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '377'
                                          'artist'  'Esbjörn Svensson Trio'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'hands off'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-1', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  ("['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', "
 "'piano']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '117.5'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '117.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'hands off'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Esbjörn Svensson Trio'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', 'piano']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.73 dB'
'TXXX:replaygain_track_peak'                        '0.974313'

========================== row from database ==========================
                                              'id'  1461073
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Esbjörn Svensson Trio/Unknown Album/hands off.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  377
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  6043365
                                           'mtime'  1620573986
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Unknown Album prerock classical or classical instruments
                                      'tag_artist'  Esbjörn Svensson Trio
                                     'tag_release'  None
                                       'tag_title'  hands off
                                             'bpm'  117.5
                                    'search_title'  'hands':1 'off':2
                                   'search_artist'  'esbjorn':1,2 'svensson':3 'trio':4
                                  'search_release'  
                                     'search_rest'  'album':6 'classical':8 'country':4 'exotica':2 'instruments':10 'jazz':1 'oldies':3 'or':9 'prerock':7 'unknown':5
                                    'search_combo'  'album':12 'classical':14 'country':10 'esbjorn':3B,4B 'exotica':8 'hands':1A 'instruments':16 'jazz':7 'off':2A 'oldies':9 'or':15 'prerock':13 'svensson':5B 'trio':6B 'unknown':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', 'piano']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573985.5010984  (2021-05-09 17:26:25)
                             'size'  6043365