======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '189'
                                          'artist'  'Mel & Kim'
                                     'text_people'  ''
                                         'release'  'The All Time Greatest Pop Album (disc 1)'
                                           'title'  'Respectable'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'pop,eighties,zomgeighties'
                                             'bpm'  '122.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The All Time Greatest Pop Album (disc 1)'
'TBPM' (BPM (beats per minute))                     '122.1'
'TCON' (Content type, a.k.a. Genre)                 'pop,eighties,zomgeighties'
'TIT2' (Title/songname/content description)         'Respectable'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mel & Kim'
'TRCK' (Track number/Position in set)               '15'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.18 dB'
'TXXX:replaygain_track_peak'                        '0.448594'

========================== row from database ==========================
                                              'id'  1538586
                                            'path'  /data/Music/Other/PrevSet/[7zomgeighties]/Mel & Kim - Respectable.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  189
                                           'genre'  pop,eighties,zomgeighties
                                        'filesize'  4542788
                                           'mtime'  1662800385
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [7zomgeighties] pop,eighties,zomgeighties
                                      'tag_artist'  Mel & Kim
                                     'tag_release'  The All Time Greatest Pop Album (disc 1)
                                       'tag_title'  Respectable
                                             'bpm'  122.1
                                    'search_title'  'respectable':1
                                   'search_artist'  'kim':2 'mel':1
                                  'search_release'  '1':9,10 'album':6 'all':2 'disc':7,8 'greatest':4 'pop':5 'the':1 'time':3
                                     'search_rest'  '7zomgeighties':2,3 'eighties':5,8 'pop':4,7 'prev':10 'prevset':1 'set':11 'zomgeighties':6,9
                                    'search_combo'  '1':12C,13C '7zomgeighties':15,16 'album':9C 'all':5C 'disc':10C,11C 'eighties':18,21 'greatest':7C 'kim':3B 'mel':2B 'pop':8C,17,20 'prev':23 'prevset':14 'respectable':1A 'set':24 'the':4C 'time':6C 'zomgeighties':19,22
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800384.5741992  (2022-09-10 10:59:44)
                             'size'  4542788