======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '2821'
                                          'artist'  'Shirley & Spinoza'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'MikeOldfield KillingFields Evacuation'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-LOCALNESS-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-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', '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'
                                             'bpm'  '135.637'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '135.637'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-shirleyspinoza'
'TIT2' (Title/songname/content description)         'MikeOldfield KillingFields Evacuation'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Shirley & Spinoza'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '134,201'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:Sortunder'                                    'm'
'TXXX:lastfmtags'                                   ['eclectic', 'collage music', 'tape music', 'avant garde', 'oldies']
'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'                        '+2.57 dB'
'TXXX:replaygain_track_peak'                        '0.517158'

========================== row from database ==========================
                                              'id'  915149
                                            'path'  /data/Music/Bulk/sns/MikeOldfield_KillingFields_Evacuation_0004.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  2821
                                           'genre'  set-pl-shirleyspinoza
                                        'filesize'  45140248
                                           'mtime'  1621044172
                                   'redo_metaread'  0
                                        'rest_str'   sns MikeOldfield_KillingFields_Evacuation_0004 set pl shirleyspinoza
                                      'tag_artist'  Shirley & Spinoza
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  MikeOldfield KillingFields Evacuation
                                             'bpm'  135.637
                                    'search_title'  'evacuation':3 'fields':7 'killing':6 'killingfields':2 'mike':4 'mikeoldfield':1 'oldfield':5
                                   'search_artist'  'shirley':1 'spinoza':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  '0004':5,14 'evacuation':4,13 'fields':12 'killing':11 'killingfields':3 'mike':9 'mikeoldfield':2 'oldfield':10 'pl':7 'set':6 'shirleyspinoza':8 'sns':1
                                    'search_combo'  '0004':16,25 'evacuation':3A,15,24 'fields':7A,23 'killing':6A,22 'killingfields':2A,14 'mike':4A,20 'mikeoldfield':1A,13 'oldfield':5A,21 'pl':18 'set':17 'shirley':8B,10C 'shirleyspinoza':19 'sns':12 'spinoza':9B,11C
                                    '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-3', 'Q-UNU-2', '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'  ['eclectic', 'collage music', 'tape music', 'avant garde', 'oldies']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621044172.1758914  (2021-05-15 04:02:52)
                             'size'  45140248