======================== unified (from filesystem) ========================
                                         'bitrate'  '249.131'
                                        'duration'  '244'
                                          'artist'  'Hooverphonic'
                                     'text_people'  ''
                                         'release'  'Presents Jackie Cane'
                                           'title'  'Nirvana Blue'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-vocals-3', 'q-mixbeat-2', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '13'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz;set-pl-sced'
                                             'bpm'  '138.607'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000148A 00001257 00006449'
'COMM:iTunNORM:eng'                                 (' 0000148A 00001257 00006449 000060AC 0002B696 00029003 00008000 00008000 '
 '00021C34 00028FEC')
'TALB' (Album/Movie/Show title)                     'Presents Jackie Cane'
'TBPM' (BPM (beats per minute))                     '138.607'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-trip hop or downtempo or acid jazz', 'set-pl-sced']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Nirvana Blue'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hooverphonic'
'TPE2' (Band/orchestra/accompaniment)               'Hooverphonic'
'TPOS' (Part of a set)                              '1/2'
'TRCK' (Track number/Position in set)               '4/13'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.326096'

========================== row from database ==========================
                                              'id'  1323805
                                            'path'  /data/Music/Bulk/00poprockelectronic/Hooverphonic/[2002] Presents Jackie Cane/1-04 Nirvana Blue.mp3
                                         'working'  None
                                         'bitrate'  249
                                    'duration_sec'  244
                                           'genre'  electronic-trip hop or downtempo or acid jazz;set-pl-sced
                                        'filesize'  7742487
                                           'mtime'  1636911297
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [2002] 1 04 electronic trip hop or downtempo or acid jazz;set pl sced
                                      'tag_artist'  Hooverphonic
                                     'tag_release'  Presents Jackie Cane
                                       'tag_title'  Nirvana Blue
                                             'bpm'  138.607
                                    'search_title'  'blue':2 'nirvana':1
                                   'search_artist'  'hooverphonic':1
                                  'search_release'  'cane':3 'jackie':2 'presents':1
                                     'search_rest'  '00poprockelectronic':1 '1':4 '2002':2,3 'acid':10 'downtempo':9 'electronic':5 'hop':7 'jazz':11,13 'or':8 'pl':15 'sced':16 'set':12,14 'trip':6
                                    'search_combo'  '00poprockelectronic':7 '1':10 '2002':8,9 'acid':16 'blue':2A 'cane':6C 'downtempo':15 'electronic':11 'hooverphonic':3B 'hop':13 'jackie':5C 'jazz':17,19 'nirvana':1A 'or':14 'pl':21 'presents':4C 'sced':22 'set':18,20 'trip':12
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911297.412167  (2021-11-14 18:34:57)
                             'size'  7742487