======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '186'
                                          'artist'  '101 Strings'
                                     'text_people'  ''
                                         'release'  'Music of the world'
                                           'title'  'Around the world in eighty days'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
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 "'Q-CHART-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
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                                      'lastfmtags'  "['instrumental', 'strings', 'myhitparade', 'myhits', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '128.4'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Music of the world'
'TBPM' (BPM (beats per minute))                     '128.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Around the world in eighty days'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings'
'TPE2' (Band/orchestra/accompaniment)               '101 Strings'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'strings', 'myhitparade', 'myhits', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.74 dB'
'TXXX:replaygain_track_peak'                        '0.618562'

========================== row from database ==========================
                                              'id'  1479789
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/1993 - Music Of The World/01 - Around The World In Eighty Days.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  186
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  7504184
                                           'mtime'  1621705552
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country The Orchestra 1993 Of The World The World In Eighty Days electronic generic radio easy listening
                                      'tag_artist'  101 Strings
                                     'tag_release'  Music of the world
                                       'tag_title'  Around the world in eighty days
                                             'bpm'  128.4
                                    'search_title'  'around':1 'days':6 'eighty':5 'in':4 'the':2 'world':3
                                   'search_artist'  '101':1 'strings':2
                                  'search_release'  'music':1 'of':2 'the':3 'world':4
                                     'search_rest'  '1993':7 'country':4 'days':12 'easy':16 'eighty':11 'electronic':13 'exotica':2 'generic':14 'in':10 'jazz':1 'listening':17 'of':8 'oldies':3 'orchestra':6 'radio':15 'the':5 'world':9
                                    'search_combo'  '101':7B '1993':19 'around':1A 'country':16 'days':6A,24 'easy':28 'eighty':5A,23 'electronic':25 'exotica':14 'generic':26 'in':4A,22 'jazz':13 'listening':29 'music':9C 'of':10C,20 'oldies':15 'orchestra':18 'radio':27 'strings':8B 'the':2A,11C,17 'world':3A,12C,21
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'q-play-2', 'Q-OLDST-3', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-3']
                                      'lastfmtags'  ['instrumental', 'strings', 'myhitparade', 'myhits', 'easy listening']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705552.3283567  (2021-05-22 19:45:52)
                             'size'  7504184