======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '86'
                                          'artist'  'Tom Lehrer'
                                     'text_people'  ''
                                         'release'  'Songs & More Songs by Tom Lehr'
                                           'title'  'The Old Dope Peddler'
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                                      'lastfmtags'  "['humor', 'piano', 'comedy', 'satire', 'funny']"
                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'entertaining-comedians'
                                             'bpm'  '111.272'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '111.272'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-comedians'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'The Old Dope Peddler'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Lehrer'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['humor', 'piano', 'comedy', 'satire', 'funny']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.04 dB'
'TXXX:replaygain_track_peak'                        '0.528059'

========================== row from database ==========================
                                              'id'  1346413
                                            'path'  /data/Music/Bulk/00spent/Tom Lehrer/1997 - Songs & More Songs By Tom Lehrer/Tom Lehrer - 02 - The Old Dope Peddler.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  86
                                           'genre'  entertaining-comedians
                                        'filesize'  2089497
                                           'mtime'  1620527321
                                   'redo_metaread'  0
                                        'rest_str'   00spent 1997 By 02 entertaining comedians
                                      'tag_artist'  Tom Lehrer
                                     'tag_release'  Songs & More Songs by Tom Lehr
                                       'tag_title'  The Old Dope Peddler
                                             'bpm'  111.272
                                    'search_title'  'dope':3 'old':2 'peddler':4 'the':1
                                   'search_artist'  'lehrer':2 'tom':1
                                  'search_release'  'by':3 'lehr':5 'more':2 'songs':1 'tom':4
                                     'search_rest'  '00spent':1 '1997':2 'by':3 'comedians':5 'entertaining':4
                                    'search_combo'  '00spent':12 '1997':13 'by':9C,14 'comedians':16 'dope':3A 'entertaining':15 'lehr':11C 'lehrer':6B 'more':8C 'old':2A 'peddler':4A 'songs':7C 'the':1A 'tom':5B,10C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['humor', 'piano', 'comedy', 'satire', 'funny']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527320.990132  (2021-05-09 04:28:40)
                             'size'  2089497