======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '254'
                                          'artist'  'Smashing Pumpkins'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Tonight, Tonight (1996)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'grunge', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '100.505'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '100.505'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Tonight, Tonight (1996)'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Smashing Pumpkins'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.09 dB'
'TXXX:replaygain_track_peak'                        '0.514425'
'TXXX:tracknum'                                     '155'

========================== row from database ==========================
                                              'id'  1353751
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/155 - Smashing Pumpkins - Tonight, Tonight (1996).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  254
                                           'genre'  rock-gr-grunge
                                        'filesize'  4081711
                                           'mtime'  1636902859
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 155 rock gr grunge
                                      'tag_artist'  Smashing Pumpkins
                                     'tag_release'  None
                                       'tag_title'  Tonight, Tonight (1996)
                                             'bpm'  100.505
                                    'search_title'  '1996':3,4 'tonight':1,2
                                   'search_artist'  'pumpkins':2 'smashing':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '155':3 '90s':2 'gr':5 'grunge':6 'rock':4
                                    'search_combo'  '00poprockelectronic':7 '155':9 '1996':3A,4A '90s':8 'gr':11 'grunge':12 'pumpkins':6B 'rock':10 'smashing':5B 'tonight':1A,2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636902858.8391078  (2021-11-14 16:14:18)
                             'size'  4081711