======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '257'
                                          'artist'  'Tieng Dan Bau'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Spinning Thread'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-LOCALNESS-3', 'Q-JZFKS-1', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '103.642'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '103.642'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'Spinning Thread'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tieng Dan Bau'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '131,185'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:Sortunder'                                    't'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.844320'

========================== row from database ==========================
                                              'id'  892007
                                            'path'  /data/Music/Bulk/sns/TiengDanBau_SpinningThread_.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  257
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4115469
                                           'mtime'  1621630406
                                   'redo_metaread'  0
                                        'rest_str'   sns TiengDanBau_SpinningThread_ set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Tieng Dan Bau
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Spinning Thread
                                             'bpm'  103.642
                                    'search_title'  'spinning':1 'thread':2
                                   'search_artist'  'bau':3 'dan':2 'tieng':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'bau':13 'dan':12 'mor':10 'pl':5 'set':4,7,9 'shirleyspinoza':6,8 'sns':1 'spinning':14 'spinningthread':3 'thread':15 'tieng':11 'tiengdanbau':2
                                    'search_combo'  'bau':5B,20 'dan':4B,19 'mor':17 'pl':12 'set':11,14,16 'shirley':6C 'shirleyspinoza':13,15 'sns':8 'spinning':1A,21 'spinningthread':10 'spinoza':7C 'thread':2A,22 'tieng':3B,18 'tiengdanbau':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630405.5319252  (2021-05-21 22:53:25)
                             'size'  4115469