======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '90'
                                          'artist'  'Shirley & Spinoza'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Bach 2prtInventionsNo.7'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['eclectic', 'collage music', 'tape music', 'avant garde', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '131.669'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '131.669'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'Bach 2prtInventionsNo.7'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Shirley & Spinoza'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['eclectic', 'collage music', 'tape music', 'avant garde', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '-6.40 dB'
'TXXX:replaygain_track_peak'                        '0.874450'
'TXXX:sortunder'                                    'b'

========================== row from database ==========================
                                              'id'  899291
                                            'path'  /data/Music/Bulk/sns/Bach_2prtInventionsNo.7_0001.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  90
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  1443885
                                           'mtime'  1621044069
                                   'redo_metaread'  0
                                        'rest_str'   sns Bach_2prtInventionsNo.7_0001 set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Shirley & Spinoza
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Bach 2prtInventionsNo.7
                                             'bpm'  131.669
                                    'search_title'  '2prt':5 '2prtinventionsno':2 '2prtinventionsno7':4 '7':3,8 'bach':1 'inventions':6 'no':7 'no7':9
                                   'search_artist'  'shirley':1 'spinoza':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  '0001':5,8,21,23 '2prt':17 '2prtinventionsno':3 '2prtinventionsno7':7 '7':4,20 'bach':2,6,16 'inventions':18 'mor':15 'no':19 'no7':22 'pl':10 'set':9,12,14 'shirleyspinoza':11,13 'sns':1
                                    'search_combo'  '0001':18,21,34,36 '2prt':5A,30 '2prtinventionsno':2A,16 '2prtinventionsno7':4A,20 '7':3A,8A,17,33 'bach':1A,15,19,29 'inventions':6A,31 'mor':28 'no':7A,32 'no7':9A,35 'pl':23 'set':22,25,27 'shirley':10B,12C 'shirleyspinoza':24,26 'sns':14 'spinoza':11B,13C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['eclectic', 'collage music', 'tape music', 'avant garde', 'oldies']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621044068.5109658  (2021-05-15 04:01:08)
                             'size'  1443885