======================== unified (from filesystem) ========================
                                         'bitrate'  '159.985'
                                        'duration'  '272'
                                          'artist'  'Whitney Houston'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1988'
                                           'title'  'So Emotional'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'rnb', 'female vocalists', 'soul', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '118.845'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1988'
'TBPM' (BPM (beats per minute))                     '118.845'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'So Emotional'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Whitney Houston'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'rnb', 'female vocalists', 'soul', 'pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                        '+13.12 dB'
'TXXX:replaygain_track_peak'                        '0.123442'

========================== row from database ==========================
                                              'id'  1325213
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/006 - Whitney Houston - So Emotional.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  272
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  5458505
                                           'mtime'  1620567714
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 006 electronic generic or radio unsorted
                                      'tag_artist'  Whitney Houston
                                     'tag_release'  Billboard Top 100 - 1988
                                       'tag_title'  So Emotional
                                             'bpm'  118.845
                                    'search_title'  'emotional':2 'so':1
                                   'search_artist'  'houston':2 'whitney':1
                                  'search_release'  '100':3 '1988':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':2 'generic':3 'or':4 'radio':5 'unsorted':6
                                    'search_combo'  '00poprockelectronic':9 '100':7C '1988':8C 'billboard':5C 'electronic':10 'emotional':2A 'generic':11 'houston':4B 'or':12 'radio':13 'so':1A 'top':6C 'unsorted':14 'whitney':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-2', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'rnb', 'female vocalists', 'soul', 'pop']
                                        'tag_date'  1988
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620567714.4276686  (2021-05-09 15:41:54)
                             'size'  5458505