======================== unified (from filesystem) ========================
                                         'bitrate'  '187.212'
                                        'duration'  '177'
                                          'artist'  'Les Baxter'
                                     'text_people'  'R. Lewis / Terry Lewis'
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Prelude In C# Minor'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'space age pop', 'jazz', 'exotica', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '90.010'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '90.010'
'TCOM' (Composer)                                   'R. Lewis / Terry Lewis'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'Prelude In C# Minor'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Les Baxter'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '9'
'TSSE' (Software/Hardware and settings used for encoding)  'SuperTagEditor Ver 2.01'
'TXXX:Band'                                         'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,190'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:date'                                         '1998'
'TXXX:lastfmtags'                                   ['lounge', 'space age pop', 'jazz', 'exotica', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.88 dB'
'TXXX:replaygain_track_peak'                        '0.592473'

========================== row from database ==========================
                                              'id'  948941
                                            'path'  /data/Music/Bulk/sns/Les Baxter - Prelude In C# Minor.mp3
                                         'working'  None
                                         'bitrate'  187
                                    'duration_sec'  177
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4147071
                                           'mtime'  1620356847
                                   'redo_metaread'  0
                                        'rest_str'   sns set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Les Baxter
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Prelude In C# Minor
                                             'bpm'  90.01
                                    'search_title'  'c':3,4 'in':2 'minor':5 'prelude':1
                                   'search_artist'  'baxter':2 'les':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'mor':8 'pl':3 'set':2,5,7 'shirleyspinoza':4,6 'sns':1
                                    'search_combo'  'baxter':7B 'c':3A,4A 'in':2A 'les':6B 'minor':5A 'mor':17 'pl':12 'prelude':1A 'set':11,14,16 'shirley':8C 'shirleyspinoza':13,15 'sns':10 'spinoza':9C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['lounge', 'space age pop', 'jazz', 'exotica', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356846.5253556  (2021-05-07 05:07:26)
                             'size'  4147071