======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '228'
                                          'artist'  'Upsilon Acrux'
                                     'text_people'  'Upsilon Acrux'
                                         'release'  'Progsoup 35'
                                           'title'  'A Quart of Zolex'
                                           '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'  ("['math rock', 'progressive rock', 'experimental', 'brutal prog', "
 "'progressive']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '45'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '139.658'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Progsoup 35'
'TBPM' (BPM (beats per minute))                     '139.658'
'TCOM' (Composer)                                   'Upsilon Acrux'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'A Quart of Zolex'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Upsilon Acrux'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Planaria'
'TRCK' (Track number/Position in set)               '45'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['math rock', 'progressive rock', 'experimental', 'brutal prog', 'progressive']
'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'                        '-0.83 dB'
'TXXX:replaygain_track_peak'                        '0.620576'

========================== row from database ==========================
                                              'id'  1415503
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 35/2064 upsilon acrux -  a quart of zolex.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  228
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  5482774
                                           'mtime'  1620737251
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2064 upsilon acrux quart zolex rock cppex progressive;set pl progspace
                                      'tag_artist'  Upsilon Acrux
                                     'tag_release'  Progsoup 35
                                       'tag_title'  A Quart of Zolex
                                             'bpm'  139.658
                                    'search_title'  'a':1 'of':3 'quart':2 'zolex':4
                                   'search_artist'  'acrux':2 'upsilon':1
                                  'search_release'  '35':2 'progsoup':1
                                     'search_rest'  '2064':3 'acrux':5 'classicprogpsy':1 'cppex':9 'pl':14 'progressive':10,12 'progsoup':2 'progspace':15 'quart':6 'rock':8 'set':11,13 'upsilon':4 'zolex':7
                                    'search_combo'  '2064':11 '35':8C 'a':1A 'acrux':6B,13 'classicprogpsy':9 'cppex':17 'of':3A 'pl':22 'progressive':18,20 'progsoup':7C,10 'progspace':23 'quart':2A,14 'rock':16 'set':19,21 'upsilon':5B,12 'zolex':4A,15
                                    'tag_tracknum'  45
                                      'num_images'  0
                                             'key'  1A
                                           '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'  ['math rock', 'progressive rock', 'experimental', 'brutal prog', 'progressive']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737251.2678542  (2021-05-11 14:47:31)
                             'size'  5482774