======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '228'
                                          'artist'  'The Knife'
                                     'text_people'  ''
                                         'release'  'Deep Cuts'
                                           'title'  'Pass this on'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'Pop'
                                             'bpm'  '86.7'
                                             'key'  'G m'  (6A)
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         'WHOA!'
'POPM:\x01ÿþ0'                                      POPM(email='\x01ÿþ0', rating=0, count=0)
'PRIV:www.mexp.dk:\x01\x06\x00\x00\x00\x003star'    PRIV(owner='www.mexp.dk', data=b'\x01\x06\x00\x00\x00\x003star')
'TALB' (Album/Movie/Show title)                     'Deep Cuts'
'TBPM' (BPM (beats per minute))                     '86.7'
'TCON' (Content type, a.k.a. Genre)                 'Pop'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Pass this on'
'TKEY' (Initial key)                                'G m'
'TPE1' (Lead performer(s)/Soloist(s))               'The Knife'
'TRCK' (Track number/Position in set)               '3'
'TXXX:http://www.foosic.org/'                       '00001c59000024061c0acbff3a74f03f0481fe3f3ef4e0381f30d4860fd9fc01cd80dc0acbc0bc95cb81c4e0e080c1c2a881e11eddf0e90feafcc45ffef9c0d34ec4b2cbdce1cd17dcb0fccbe885cd35c8f0cf34e9f1dcedc7c4c3ecb3c4dcc018e0ee8fdfb1fc0bccb09f5fec343c2f7db0d480c0e1f5b8b7d0c2ffefe0f578ffc4e7e0ff00c17c1882f13afbe0ccb7f3c5eed1c149cc200c94cfff55b1c0cc5860eafc8cc0c0bafc50c1ff3fc0301f7fe275a3f281f4c9fdc4cdfd7ed9ccccdcc0eed30440ccfff1d2ebdf8bc1effffc01bedff060cddfe0d03dc3e840cc829801ccafc090d2fdaec1d2020da0ead285d0d03faeb0f03eecc4f67d9dc07479abf9cd440f80dc25cdc1ec0a8b50f0fbf0ccf8d060c4e4b3f2dcf00cdcb2a06ef8bc3ae0cee064cb89c034978cf0dc4348b0fd230570fb2ef7f8ff7cd3f4fcc5df88ecc629d07ccccc90ccdfdd95ac0be83cdc5fbc35da4fbc34d561dcc0e2fdfbc4c0f76cf065919988823a97a943646662e881d6656451451646659646662e88ea53e56596598ba2165995914514591996596598ba8ba97a959659662e88596596451452646640'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'

========================== row from database ==========================
                                              'id'  1538589
                                            'path'  /data/Music/Other/PrevSet/[2electro1-softer]/The Knife/Pass This On.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  228
                                           'genre'  Pop
                                        'filesize'  5478611
                                           'mtime'  1657681446
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [2electro1 softer] This On Pop
                                      'tag_artist'  The Knife
                                     'tag_release'  Deep Cuts
                                       'tag_title'  Pass this on
                                             'bpm'  86.7
                                    'search_title'  'on':3 'pass':1 'this':2
                                   'search_artist'  'knife':2 'the':1
                                  'search_release'  'cuts':2 'deep':1
                                     'search_rest'  '2electro1':2,3 'on':7 'pop':8 'prev':9 'prevset':1 'set':10 'softer':4,5 'this':6
                                    'search_combo'  '2electro1':9,10 'cuts':7C 'deep':6C 'knife':5B 'on':3A,14 'pass':1A 'pop':15 'prev':16 'prevset':8 'set':17 'softer':11,12 'the':4B 'this':2A,13
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  G m
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1657681446.2426994  (2022-07-13 05:04:06)
                             'size'  5478611