======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '391'
                                          'artist'  'Astor Piazzolla'
                                     'text_people'  ''
                                         'release'  'Tango - Zero Hour'
                                           'title'  'Milonga Del Angel'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['contemporary classical', 'tango nuevo', 'argentina', 'jazz', 'tango']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '145.059'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tango - Zero Hour'
'TBPM' (BPM (beats per minute))                     '145.059'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'Milonga Del Angel'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Astor Piazzolla'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['contemporary classical', 'tango nuevo', 'argentina', 'jazz', 'tango']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.87 dB'
'TXXX:replaygain_track_peak'                        '0.817891'

========================== row from database ==========================
                                              'id'  1242778
                                            'path'  /data/Music/Bulk/00localcharacter/Astor Piazzolla - Tango - Zero Hour/02 Milonga Del Angel.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  391
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  7911601
                                           'mtime'  1620528176
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 02 loc style tango milonga
                                      'tag_artist'  Astor Piazzolla
                                     'tag_release'  Tango - Zero Hour
                                       'tag_title'  Milonga Del Angel
                                             'bpm'  145.059
                                    'search_title'  'angel':3 'del':2 'milonga':1
                                   'search_artist'  'astor':1 'piazzolla':2
                                  'search_release'  'hour':3 'tango':1 'zero':2
                                     'search_rest'  'loc':1 'milonga':4 'style':2 'tango':3
                                    'search_combo'  'angel':3A 'astor':4B 'del':2A 'hour':8C 'loc':9 'milonga':1A,12 'piazzolla':5B 'style':10 'tango':6C,11 'zero':7C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'tango nuevo', 'argentina', 'jazz', 'tango']
                                        'tag_date'  1986
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528176.0136871  (2021-05-09 04:42:56)
                             'size'  7911601