======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '219'
                                          'artist'  'Tom Lehrer'
                                     'text_people'  ''
                                         'release'  'An Evening Wasted with Tom Lehrer'
                                           'title'  'The Masochism Tango'
                                           'quals'  "['q-bass-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '122.1'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'An Evening Wasted with Tom Lehrer'
'TBPM' (BPM (beats per minute))                     '122.1'
'TIT2' (Title/songname/content description)         'The Masochism Tango'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Lehrer'
'TRCK' (Track number/Position in set)               '10'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.597211'

========================== row from database ==========================
                                              'id'  1538262
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Tom Lehrer/The Masochism Tango.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  219
                                           'genre'  
                                        'filesize'  5270103
                                           'mtime'  1662800576
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing]
                                      'tag_artist'  Tom Lehrer
                                     'tag_release'  An Evening Wasted with Tom Lehrer
                                       'tag_title'  The Masochism Tango
                                             'bpm'  122.1
                                    'search_title'  'masochism':2 'tango':3 'the':1
                                   'search_artist'  'lehrer':2 'tom':1
                                  'search_release'  'an':1 'evening':2 'lehrer':6 'tom':5 'wasted':3 'with':4
                                     'search_rest'  '9amusing':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9amusing':13,14 'an':6C 'evening':7C 'lehrer':5B,11C 'masochism':2A 'prev':15 'prevset':12 'set':16 'tango':3A 'the':1A 'tom':4B,10C 'wasted':8C 'with':9C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['q-bass-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800575.8560247  (2022-09-10 11:02:55)
                             'size'  5270103