======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '175'
                                          'artist'  'DSCB'
                                     'text_people'  ''
                                         'release'  'DSCB'
                                           'title'  'Riverside blues'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-3', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', "
 "'Q-JZFKS-3', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-dixiestyle'
                                             'bpm'  '113.8'
                                             'key'  'D m'  (7A)
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'DSCB'
'TBPM' (BPM (beats per minute))                     '113.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-dixiestyle'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         'Riverside blues'
'TKEY' (Initial key)                                'D m'
'TPE1' (Lead performer(s)/Soloist(s))               'DSCB'
'TPE2' (Band/orchestra/accompaniment)               'DSCB'
'TXXX:MusicMagic Data'                              'AQEBWpbkhtytGvNgih8EOE+ugAGCeYDpN3u0L/1vgJP2nLM0gvM68bL7gAG+t6mmgwGAAfAXG4TgwYABgcCyLS0p2VbMybsQgAKAAQ=='
'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'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '3'
'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'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.43 dB'
'TXXX:replaygain_track_peak'                        '0.486012'

========================== row from database ==========================
                                              'id'  1495139
                                            'path'  /data/Music/Other/Pa/Dixieland/DSCB/Riverside blues.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  175
                                           'genre'  prerock-jb-jazz-dixiestyle
                                        'filesize'  3521423
                                           'mtime'  1621094199
                                   'redo_metaread'  0
                                        'rest_str'   Pa Dixieland prerock jb jazz dixiestyle
                                      'tag_artist'  DSCB
                                     'tag_release'  DSCB
                                       'tag_title'  Riverside blues
                                             'bpm'  113.8
                                    'search_title'  'blues':2 'riverside':1
                                   'search_artist'  'dscb':1
                                  'search_release'  'dscb':1
                                     'search_rest'  'dixieland':2 'dixiestyle':6 'jazz':5 'jb':4 'pa':1 'prerock':3
                                    'search_combo'  'blues':2A 'dixieland':6 'dixiestyle':10 'dscb':3B,4C 'jazz':9 'jb':8 'pa':5 'prerock':7 'riverside':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  D m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-3', 'Q-UNU-1', 'q-drums-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094198.7355525  (2021-05-15 17:56:38)
                             'size'  3521423