======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '245'
                                          'artist'  'Take That'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Back For Good (1995)'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['90s', 'britpop', 'boybands', 'british', 'pop', 'robbie williams']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '105.532'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '105.532'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Back For Good (1995)'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Take That'
'TRCK' (Track number/Position in set)               '0'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['90s', 'britpop', 'boybands', 'british', 'pop', 'robbie williams']
'TXXX:other'                                        '070'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.645492'

========================== row from database ==========================
                                              'id'  1342249
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/070 - Take That - Back For Good (1995).mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  245
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3432159
                                           'mtime'  1620384830
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 070 electronic generic radio unsorted;set pl billboard
                                      'tag_artist'  Take That
                                     'tag_release'  None
                                       'tag_title'  Back For Good (1995)
                                             'bpm'  105.532
                                    'search_title'  '1995':4,5 'back':1 'for':2 'good':3
                                   'search_artist'  'take':1 'that':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'billboard':11 'electronic':3 'generic':4 'pl':10 'radio':5 'set':7,9 'unsorted':6,8
                                    'search_combo'  '00poprockelectronic':8 '1995':4A,5A '90s':9 'back':1A 'billboard':18 'electronic':10 'for':2A 'generic':11 'good':3A 'pl':17 'radio':12 'set':14,16 'take':6B 'that':7B 'unsorted':13,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['90s', 'britpop', 'boybands', 'british', 'pop', 'robbie williams']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384829.7270184  (2021-05-07 12:53:49)
                             'size'  3432159