======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '457'
                                          'artist'  'Wallenstein'
                                     'text_people'  ''
                                         'release'  'Progsoup 29'
                                           'title'  'Backstreet Dreamer'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['german', 'krautrock', 'progressive rock', 'psychedelic rock', 'symphonic "
 "rock']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '6'
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '94.636'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'COMM:MusicMatch_Preference:\x00\x00\x00'           'None'
'TALB' (Album/Movie/Show title)                     'Progsoup 29'
'TBPM' (BPM (beats per minute))                     '94.636'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Backstreet Dreamer'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Wallenstein'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '20/6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['german',
 'krautrock',
 'progressive rock',
 'psychedelic rock',
 'symphonic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.03 dB'
'TXXX:replaygain_track_peak'                        '0.784657'

========================== row from database ==========================
                                              'id'  1409398
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 29/1631 Wallenstein  - Backstreet Dreamer.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  457
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  7328035
                                           'mtime'  1620737071
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 1631 rock cppex progressive;set pl progspace
                                      'tag_artist'  Wallenstein
                                     'tag_release'  Progsoup 29
                                       'tag_title'  Backstreet Dreamer
                                             'bpm'  94.636
                                    'search_title'  'backstreet':1 'dreamer':2
                                   'search_artist'  'wallenstein':1
                                  'search_release'  '29':2 'progsoup':1
                                     'search_rest'  '1631':3 'classicprogpsy':1 'cppex':5 'pl':10 'progressive':6,8 'progsoup':2 'progspace':11 'rock':4 'set':7,9
                                    'search_combo'  '1631':8 '29':5C 'backstreet':1A 'classicprogpsy':6 'cppex':10 'dreamer':2A 'pl':15 'progressive':11,13 'progsoup':4C,7 'progspace':16 'rock':9 'set':12,14 'wallenstein':3B
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'krautrock', 'progressive rock', 'psychedelic rock', 'symphonic rock']
                                        'tag_date'  1977
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737070.736361  (2021-05-11 14:44:30)
                             'size'  7328035