======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '142'
                                          'artist'  'Strauss'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Radetzky marsch'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-2', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', "
 "'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '109.8'
                                             'key'  'E m'  (9A)
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '109.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         'Radetzky marsch'
'TKEY' (Initial key)                                'E m'
'TPE1' (Lead performer(s)/Soloist(s))               'Strauss'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBYhI2hkuooArklYxlNxm3gAGCG4ACEymgNP5+gAH+9IABgAEW2LL3gF7oo6lhj6CAAeUiDCDjEZz0gAGhYSYgCMnBN7tbgAKAAYOyuQH3IIbOKNAVnYABgauAYhV4ozPtmoAB4KOGGoF6C4e034AR1qyKyKG6gAG+dRnXvg2E1YABskEkJvq5xB2i7IACgAE='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.16 dB'
'TXXX:replaygain_track_peak'                        '0.509163'

========================== row from database ==========================
                                              'id'  1495558
                                            'path'  /data/Music/Other/Pa/Klassiek/Strauss/Radetzky marsch.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  142
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  2859148
                                           'mtime'  1621094169
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Strauss
                                     'tag_release'  None
                                       'tag_title'  Radetzky marsch
                                             'bpm'  109.8
                                    'search_title'  'marsch':2 'radetzky':1
                                   'search_artist'  'strauss':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'classical':7 'instruments':9 'klassiek':5 'marsch':2A 'or':8 'pa':4 'prerock':6 'radetzky':1A 'strauss':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  E m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-drums-2', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094168.9015684  (2021-05-15 17:56:08)
                             'size'  2859148