======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '203'
                                          'artist'  'Linkin Park'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'With you'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-4', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal-nu'
                                             'bpm'  '98.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '98.5'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-nu'
'TIT2' (Title/songname/content description)         'With you'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Linkin Park'
'TXXX:Mp3gain_minmax'                               '089,189'
'TXXX:Mp3gain_undo'                                 '+007,+007,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.70 dB'
'TXXX:replaygain_track_peak'                        '0.380565'

========================== row from database ==========================
                                              'id'  1311150
                                            'path'  /data/Music/Bulk/00poprockelectronic/Linkin Park/Unsorted/Linkin Park - With you.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  203
                                           'genre'  eid-metal-nu
                                        'filesize'  3255223
                                           'mtime'  1620311145
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted eid metal nu
                                      'tag_artist'  Linkin Park
                                     'tag_release'  None
                                       'tag_title'  With you
                                             'bpm'  98.5
                                    'search_title'  'with':1 'you':2
                                   'search_artist'  'linkin':1 'park':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'eid':3 'metal':4 'nu':5 'unsorted':2
                                    'search_combo'  '00poprockelectronic':5 'eid':7 'linkin':3B 'metal':8 'nu':9 'park':4B 'unsorted':6 'with':1A 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'metal', 'nu metal', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311145.1584485  (2021-05-06 16:25:45)
                             'size'  3255223