======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '279'
                                          'artist'  'Klimt 1918'
                                     'text_people'  ''
                                         'release'  'Dopoguerra'
                                           'title'  "Snow of '85"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'post rock', 'rock', 'progressive rock', 'italian']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '135.184'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dopoguerra'
'TBPM' (BPM (beats per minute))                     '135.184'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         "Snow of '85"
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Klimt 1918'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['alternative rock', 'post rock', 'rock', 'progressive rock', 'italian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                        '-0.34 dB'
'TXXX:replaygain_track_peak'                        '0.372857'

========================== row from database ==========================
                                              'id'  1510539
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Klimt 1918/2005 - Dopoguerra/03-Snow of _85.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  279
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  6717403
                                           'mtime'  1620736207
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 2005 03 _85 rock cppex progressive;set pl progspace
                                      'tag_artist'  Klimt 1918
                                     'tag_release'  Dopoguerra
                                       'tag_title'  Snow of '85
                                             'bpm'  135.184
                                    'search_title'  '85':3,4 'of':2 'snow':1
                                   'search_artist'  '1918':2 'klimt':1
                                  'search_release'  'dopoguerra':1
                                     'search_rest'  '2005':2 '85':3 'classicprogpsy':1 'cppex':5 'pl':10 'progressive':6,8 'progspace':11 'rock':4 'set':7,9
                                    'search_combo'  '1918':6B '2005':9 '85':3A,4A,10 'classicprogpsy':8 'cppex':12 'dopoguerra':7C 'klimt':5B 'of':2A 'pl':17 'progressive':13,15 'progspace':18 'rock':11 'set':14,16 'snow':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'post rock', 'rock', 'progressive rock', 'italian']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736206.9904695  (2021-05-11 14:30:06)
                             'size'  6717403