======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '355'
                                          'artist'  'The 101 Strings Orchestra'
                                     'text_people'  ''
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                                           'title'  'Till There Was You'
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                                      'lastfmtags'  "['instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '142.9'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Beatles Vol. 2'
'TBPM' (BPM (beats per minute))                     '142.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TIT2' (Title/songname/content description)         'Till There Was You'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The 101 Strings Orchestra'
'TRCK' (Track number/Position in set)               '7'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 32bits version 3.98.4 (http://www.mp3dev.org/)'
'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'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.87 dB'
'TXXX:replaygain_track_peak'                        '0.500516'

========================== row from database ==========================
                                              'id'  1478897
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/2002 - The Beatles. Volume Two/07 - Till There Was You .mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  355
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  14251150
                                           'mtime'  1621705581
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 2002 Beatles. Volume Two 07 electronic generic or radio easy listening
                                      'tag_artist'  The 101 Strings Orchestra
                                     'tag_release'  The Beatles Vol. 2
                                       'tag_title'  Till There Was You
                                             'bpm'  142.9
                                    'search_title'  'there':2 'till':1 'was':3 'you':4
                                   'search_artist'  '101':2 'orchestra':4 'strings':3 'the':1
                                  'search_release'  '2':5 'beatles':2 'the':1 'vol':3,4
                                     'search_rest'  '2002':5 'beatles':6,7 'country':4 'easy':14 'electronic':10 'exotica':2 'generic':11 'jazz':1 'listening':15 'oldies':3 'or':12 'radio':13 'two':9 'volume':8
                                    'search_combo'  '101':6B '2':13C '2002':18 'beatles':10C,19,20 'country':17 'easy':27 'electronic':23 'exotica':15 'generic':24 'jazz':14 'listening':28 'oldies':16 'or':25 'orchestra':8B 'radio':26 'strings':7B 'the':5B,9C 'there':2A 'till':1A 'two':22 'vol':11C,12C 'volume':21 'was':3A 'you':4A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6B
                                           '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-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-1']
                                      'lastfmtags'  ['instrumental']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705580.578107  (2021-05-22 19:46:20)
                             'size'  14251150