======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '290'
                                          'artist'  'The Flying Pickets'
                                     'text_people'  ''
                                         'release'  'The Original Flying Pickets, Vol. 1'
                                           'title'  'Smells Like Teen Spirit'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['a cappella', '80s', 'british', 'pop', 'acapella']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '13'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '118.083'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 00000823 00000B52 00004897 00005E46 0001567E 0002548D 00008000 00008000 '
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'TALB' (Album/Movie/Show title)                     'The Original Flying Pickets, Vol. 1'
'TBPM' (BPM (beats per minute))                     '118.083'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Smells Like Teen Spirit'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'The Flying Pickets'
'TPE2' (Band/orchestra/accompaniment)               'The Flying Pickets'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/13'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['a cappella', '80s', 'british', 'pop', 'acapella']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.72 dB'
'TXXX:replaygain_track_peak'                        '0.480256'

========================== row from database ==========================
                                              'id'  1289707
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/barbershop quartet - rockapella - title - smells like teen spirit.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  290
                                           'genre'  electronic-unsorted
                                        'filesize'  4683356
                                           'mtime'  1620573085
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] barbershop quartet rockapella title smells like teen spirit electronic unsorted
                                      'tag_artist'  The Flying Pickets
                                     'tag_release'  The Original Flying Pickets, Vol. 1
                                       'tag_title'  Smells Like Teen Spirit
                                             'bpm'  118.083
                                    'search_title'  'like':2 'smells':1 'spirit':4 'teen':3
                                   'search_artist'  'flying':2 'pickets':3 'the':1
                                  'search_release'  '1':8 'flying':3 'original':2 'pickets':4,5 'the':1 'vol':6,7
                                     'search_rest'  '00poprockelectronic':1 'barbershop':7 'electronic':15 'files':5,6 'like':12 'loose':3,4 'quartet':8 'rockapella':9 'smells':11 'spirit':14 'teen':13 'title':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':16 '1':15C 'barbershop':22 'electronic':30 'files':20,21 'flying':6B,10C 'like':2A,27 'loose':18,19 'original':9C 'pickets':7B,11C,12C 'quartet':23 'rockapella':24 'smells':1A,26 'spirit':4A,29 'teen':3A,28 'the':5B,8C 'title':25 'unsorted':17 'vol':13C,14C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['a cappella', '80s', 'british', 'pop', 'acapella']
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573084.5930247  (2021-05-09 17:11:24)
                             'size'  4683356