======================== unified (from filesystem) ========================
                                         'bitrate'  '152.274'
                                        'duration'  '4024'
                                          'artist'  'DJ Barfing Bart'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Painful Megamix'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '137.665'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TBPM' (BPM (beats per minute))                     '137.665'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TIT2' (Title/songname/content description)         'Painful Megamix'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'DJ Barfing Bart'
'TXXX:FMPS_Rating'                                  '0.4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.81 dB'
'TXXX:replaygain_track_peak'                        '0.912746'

========================== row from database ==========================
                                              'id'  258222
                                            'path'  /data/Music/Bulk/0playlists/DJ Barfing Bart__Painful Megamix.mp3
                                         'working'  None
                                         'bitrate'  152
                                    'duration_sec'  4024
                                           'genre'  electronic-generic or radio
                                        'filesize'  76609210
                                           'mtime'  1630243535
                                   'redo_metaread'  0
                                        'rest_str'   0playlists Bart__Painful electronic generic or radio
                                      'tag_artist'  DJ Barfing Bart
                                     'tag_release'  None
                                       'tag_title'  Painful Megamix
                                             'bpm'  137.665
                                    'search_title'  'megamix':2 'painful':1
                                   'search_artist'  'barfing':2 'bart':3 'dj':1
                                  'search_release'  
                                     'search_rest'  '0playlists':1 'bart':2 'electronic':4 'generic':5 'or':6 'painful':3 'radio':7
                                    'search_combo'  '0playlists':6 'barfing':4B 'bart':5B,7 'dj':3B 'electronic':9 'generic':10 'megamix':2A 'or':11 'painful':1A,8 'radio':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630243535.2284489  (2021-08-29 15:25:35)
                             'size'  76609210