======================== unified (from filesystem) ========================
                                         'bitrate'  '159.772'
                                        'duration'  '249'
                                          'artist'  'Prince'
                                     'text_people'  ''
                                         'release'  'The Hits - The B-Sides, Cd 1'
                                           'title'  'Uptown'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk-pop'
                                             'bpm'  '127.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Hits - The B-Sides, Cd 1'
'TBPM' (BPM (beats per minute))                     '127.0'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk-pop'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Uptown'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince'
'TRCK' (Track number/Position in set)               '7'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.743862'

========================== row from database ==========================
                                              'id'  1299824
                                            'path'  /data/Music/Bulk/00poprockelectronic/Prince/The Hits/Prince - Uptown.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  249
                                           'genre'  funk or soul-funk-pop
                                        'filesize'  4984832
                                           'mtime'  1620571789
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic funk or soul funk pop
                                      'tag_artist'  Prince
                                     'tag_release'  The Hits - The B-Sides, Cd 1
                                       'tag_title'  Uptown
                                             'bpm'  127.0
                                    'search_title'  'uptown':1
                                   'search_artist'  'prince':1
                                  'search_release'  '1':7 'b':3 'bsides':5 'cd':6 'hits':2 'sides':4 'the':1
                                     'search_rest'  '00poprockelectronic':1 'funk':2 'or':3 'pop':5 'soul':4
                                    'search_combo'  '00poprockelectronic':10 '1':9C 'b':5C 'bsides':7C 'cd':8C 'funk':11 'hits':4C 'or':12 'pop':14 'prince':2B 'sides':6C 'soul':13 'the':3C 'uptown':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620571788.7715745  (2021-05-09 16:49:48)
                             'size'  4984832