======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '266'
                                          'artist'  'Talvin Singh'
                                     'text_people'  ''
                                         'release'  'OK'
                                           'title'  'Butterfly'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['electronica', 'world', 'electronic', 'chillout', 'drum and bass']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '11'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-style-mix'
                                             'bpm'  '113.010'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '960E400B'
'COMM:ID3v1 Comment:XXX'                            '960E400B'
'TALB' (Album/Movie/Show title)                     'OK'
'TBPM' (BPM (beats per minute))                     '113.010'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-mix'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Butterfly'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Talvin Singh'
'TRCK' (Track number/Position in set)               '2/11'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, 192 Kbit/s, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'world', 'electronic', 'chillout', 'drum and bass']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.50 dB'
'TXXX:replaygain_track_peak'                        '0.513523'

========================== row from database ==========================
                                              'id'  1340366
                                            'path'  /data/Music/Bulk/00poprockelectronic/Talvin Singh/OK/02 - Butterfly.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  266
                                           'genre'  loc-style-mix
                                        'filesize'  6398411
                                           'mtime'  1620572173
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 02 loc style mix
                                      'tag_artist'  Talvin Singh
                                     'tag_release'  OK
                                       'tag_title'  Butterfly
                                             'bpm'  113.01
                                    'search_title'  'butterfly':1
                                   'search_artist'  'singh':2 'talvin':1
                                  'search_release'  'ok':1
                                     'search_rest'  '00poprockelectronic':1 'loc':2 'mix':4 'style':3
                                    'search_combo'  '00poprockelectronic':5 'butterfly':1A 'loc':6 'mix':8 'ok':4C 'singh':3B 'style':7 'talvin':2B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'world', 'electronic', 'chillout', 'drum and bass']
                                        'tag_date'  1998
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620572173.169891  (2021-05-09 16:56:13)
                             'size'  6398411