======================== unified (from filesystem) ========================
                                         'bitrate'  '157.768'
                                        'duration'  '228'
                                          'artist'  'Prince'
                                     'text_people'  ''
                                         'release'  'The Hits - The B-Sides, Cd 1'
                                           'title'  'Why You Wanna Treat Me So Bad'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk-pop'
                                             'bpm'  '126.489'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Hits - The B-Sides, Cd 1'
'TBPM' (BPM (beats per minute))                     '126.489'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk-pop'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Why You Wanna Treat Me So Bad'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'rock', 'pop', 'funk']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.523976'

========================== row from database ==========================
                                              'id'  791158
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Prince/The Hits/Prince - 05 - Why You Wanna Treat Me So Bad.mp3
                                         'working'  None
                                         'bitrate'  157
                                    'duration_sec'  228
                                           'genre'  funk or soul-funk-pop
                                        'filesize'  4517504
                                           'mtime'  1620531387
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 05 funk or soul funk pop
                                      'tag_artist'  Prince
                                     'tag_release'  The Hits - The B-Sides, Cd 1
                                       'tag_title'  Why You Wanna Treat Me So Bad
                                             'bpm'  126.489
                                    'search_title'  'bad':7 'me':5 'so':6 'treat':4 'wanna':3 'why':1 'you':2
                                   'search_artist'  'prince':1
                                  'search_release'  '1':7 'b':3 'bsides':5 'cd':6 'hits':2 'sides':4 'the':1
                                     'search_rest'  'country':4 'exotica':2 'funk':5 'jazz':1 'oldies':3 'or':6 'pop':8 'soul':7
                                    'search_combo'  '1':15C 'b':11C 'bad':7A 'bsides':13C 'cd':14C 'country':19 'exotica':17 'funk':20 'hits':10C 'jazz':16 'me':5A 'oldies':18 'or':21 'pop':23 'prince':8B 'sides':12C 'so':6A 'soul':22 'the':9C 'treat':4A 'wanna':3A 'why':1A 'you':2A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620531387.404468  (2021-05-09 05:36:27)
                             'size'  4517504