======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '1168'
                                          'artist'  'The Gaylords'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Yakety Yak'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['chill906', '50s vocal group', 'oldies', 'vocal', 'italian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza'
                                             'bpm'  '128.414'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '128.414'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-shirleyspinoza']
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Yakety Yak'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Gaylords'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '152,198'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:Sortunder'                                    't'
'TXXX:lastfmtags'                                   ['chill906', '50s vocal group', 'oldies', 'vocal', 'italian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.750858'

========================== row from database ==========================
                                              'id'  878223
                                            'path'  /data/Music/Bulk/sns/TheGaylords_YaketyYak_0007.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  1168
                                           'genre'  set-pl-shirleyspinoza
                                        'filesize'  18696472
                                           'mtime'  1621044217
                                   'redo_metaread'  0
                                        'rest_str'   sns TheGaylords_YaketyYak_0007 set pl shirleyspinoza
                                      'tag_artist'  The Gaylords
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Yakety Yak
                                             'bpm'  128.414
                                    'search_title'  'yak':2 'yakety':1
                                   'search_artist'  'gaylords':2 'the':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  '0007':4,12 'gaylords':9 'pl':6 'set':5 'shirleyspinoza':7 'sns':1 'the':8 'thegaylords':2 'yak':11 'yakety':10 'yaketyyak':3
                                    'search_combo'  '0007':10,18 'gaylords':4B,15 'pl':12 'set':11 'shirley':5C 'shirleyspinoza':13 'sns':7 'spinoza':6C 'the':3B,14 'thegaylords':8 'yak':2A,17 'yakety':1A,16 'yaketyyak':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['chill906', '50s vocal group', 'oldies', 'vocal', 'italian']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621044216.6440866  (2021-05-15 04:03:36)
                             'size'  18696472