======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '443'
                                          'artist'  'panzerballett'
                                     'text_people'  ''
                                         'release'  'progsoup 10'
                                           'title'  'iron maiden voyage'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz metal', 'fusion', 'progressive metal', 'jazz', 'progressive rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '9'
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '145.895'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'progsoup 10'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace', 'set-pl-progspace']
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'iron maiden voyage'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'panzerballett'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '5/9'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, External encoder lame.exe (%s %d -b 128) '
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['jazz metal', 'fusion', 'progressive metal', 'jazz', 'progressive rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.31 dB'
'TXXX:replaygain_track_peak'                        '0.424142'

========================== row from database ==========================
                                              'id'  1411678
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/Progsoup 10/541 pantzerballet - iron maiden voyage.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  443
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  7091761
                                           'mtime'  1620736249
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP Progsoup 541 pantzerballet rock cppex progressive;set pl progspace
                                      'tag_artist'  panzerballett
                                     'tag_release'  progsoup 10
                                       'tag_title'  iron maiden voyage
                                             'bpm'  145.895
                                    'search_title'  'iron':1 'maiden':2 'voyage':3
                                   'search_artist'  'panzerballett':1
                                  'search_release'  'progsoup':1
                                     'search_rest'  '541':3 'classicprogpsy':1 'cppex':6 'pantzerballet':4 'pl':11 'progressive':7,9 'progsoup':2 'progspace':12 'rock':5 'set':8,10
                                    'search_combo'  '541':8 'classicprogpsy':6 'cppex':11 'iron':1A 'maiden':2A 'pantzerballet':9 'panzerballett':4B 'pl':16 'progressive':12,14 'progsoup':5C,7 'progspace':17 'rock':10 'set':13,15 'voyage':3A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz metal', 'fusion', 'progressive metal', 'jazz', 'progressive rock']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736249.1128302  (2021-05-11 14:30:49)
                             'size'  7091761