======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '589'
                                          'artist'  'Ampacity'
                                     'text_people'  ''
                                         'release'  'Encounter One'
                                           'title'  "Asimov's Sideburns"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'stoner rock', 'space rock', 'psychedelic rock', 'polish']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '3'
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic-space;set-pl-progspace'
                                             'bpm'  '139.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Encounter One'
'TBPM' (BPM (beats per minute))                     '139.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-psychedelic-space', 'set-pl-progspace']
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         "Asimov's Sideburns"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ampacity'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/3'
'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'                                   ['instrumental', 'stoner rock', 'space rock', 'psychedelic rock', 'polish']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.48 dB'
'TXXX:replaygain_track_peak'                        '0.362276'

========================== row from database ==========================
                                              'id'  1507237
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/ampacity - encounter one 2013/02 - asimov_s sideburns.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  589
                                           'genre'  rock-cppex-psychedelic-space;set-pl-progspace
                                        'filesize'  23632486
                                           'mtime'  1620736206
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy ampacity encounter one 2013 02 asimov_s sideburns rock cppex psychedelic space;set pl progspace
                                      'tag_artist'  Ampacity
                                     'tag_release'  Encounter One
                                       'tag_title'  Asimov's Sideburns
                                             'bpm'  139.7
                                    'search_title'  'asimov':1 'asimovs':3 's':2 'sideburns':4
                                   'search_artist'  'ampacity':1
                                  'search_release'  'encounter':1 'one':2
                                     'search_rest'  '2013':5 'ampacity':2 'asimov':6 'classicprogpsy':1 'cppex':10 'encounter':3 'one':4 'pl':16 'progspace':17 'psychedelic':11 'rock':9 's':7 'set':13,15 'sideburns':8 'space':12,14
                                    'search_combo'  '2013':12 'ampacity':5B,9 'asimov':1A,13 'asimovs':3A 'classicprogpsy':8 'cppex':17 'encounter':6C,10 'one':7C,11 'pl':23 'progspace':24 'psychedelic':18 'rock':16 's':2A,14 'set':20,22 'sideburns':4A,15 'space':19,21
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'stoner rock', 'space rock', 'psychedelic rock', 'polish']
                                        'tag_date'  2013
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736206.4456239  (2021-05-11 14:30:06)
                             'size'  23632486