======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '246'
                                          'artist'  'Great Zorro Hits'
                                     'text_people'  ''
                                         'release'  'Great Zorro Hits'
                                           'title'  'Cruel Summer'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '20'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '128.904'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000FA3 00000E88 00006720'
'COMM:iTunNORM:eng'                                 (' 00000FA3 00000E88 00006720 000054A5 00020C5A 00020C5A 00008000 00008000 '
 '000311F0 0000C377')
'TALB' (Album/Movie/Show title)                     'Great Zorro Hits'
'TBPM' (BPM (beats per minute))                     '128.904'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Cruel Summer'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ace Of Base'
'TPE2' (Band/orchestra/accompaniment)               'Great Zorro Hits'
'TRCK' (Track number/Position in set)               '5/20'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.69 dB'
'TXXX:replaygain_track_peak'                        '0.456760'

========================== row from database ==========================
                                              'id'  1341456
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/ace of base - greatest hits - cruel summer371.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  246
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  3995314
                                           'mtime'  1620573072
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] ace of base greatest hits cruel summer371 electronic generic radio dance
                                      'tag_artist'  Great Zorro Hits
                                     'tag_release'  Great Zorro Hits
                                       'tag_title'  Cruel Summer
                                             'bpm'  128.904
                                    'search_title'  'cruel':1 'summer':2
                                   'search_artist'  'great':1 'hits':3 'zorro':2
                                  'search_release'  'great':1 'hits':3 'zorro':2
                                     'search_rest'  '00poprockelectronic':1 'ace':7 'base':9 'cruel':12 'dance':17 'electronic':14 'files':5,6 'generic':15 'greatest':10 'hits':11 'loose':3,4 'of':8 'radio':16 'summer371':13 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 'ace':15 'base':17 'cruel':1A,20 'dance':25 'electronic':22 'files':13,14 'generic':23 'great':3B,6C 'greatest':18 'hits':5B,8C,19 'loose':11,12 'of':16 'radio':24 'summer':2A 'summer371':21 'unsorted':10 'zorro':4B,7C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573072.0092611  (2021-05-09 17:11:12)
                             'size'  3995314