======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '525'
                                          'artist'  'Mozart'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Concert fluit harp  in C'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-4', 'q-piano-2', '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'  '99.7'
                                             'key'  'G#m'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '99.7'
'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)         'Concert fluit harp  in C'
'TKEY' (Initial key)                                'G#m'
'TPE1' (Lead performer(s)/Soloist(s))               'Mozart'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBWNKihBSvkcREgf3mzUDDh0aDgoACCkCaWxUQgKfLp4ABgAENWKyEgBq9DIA9jFeAAcjeMnz5wqVYgAHBJxxu5ci/SqzXgAKAAZNtwbDSooT17Lc51Y28grOAFhOvoDkN0YAd00WJwoH4BFSsX4AGtkOCAIlmgAG8vCXZzsGGO4Nhu78XxNtiswqjkIACgAE='
'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'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.41 dB'
'TXXX:replaygain_track_peak'                        '0.591729'

========================== row from database ==========================
                                              'id'  1495184
                                            'path'  /data/Music/Other/Pa/Klassiek/Mozart/Concert fluit harp  in C.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  525
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  10517840
                                           'mtime'  1621094166
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Mozart
                                     'tag_release'  None
                                       'tag_title'  Concert fluit harp  in C
                                             'bpm'  99.7
                                    'search_title'  'c':5 'concert':1 'fluit':2 'harp':3 'in':4
                                   'search_artist'  'mozart':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'c':5A 'classical':10 'concert':1A 'fluit':2A 'harp':3A 'in':4A 'instruments':12 'klassiek':8 'mozart':6B 'or':11 'pa':7 'prerock':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  G#m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-2', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-drums-1', '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'  1621094166.1151905  (2021-05-15 17:56:06)
                             'size'  10517840