======================== unified (from filesystem) ========================
                                         'bitrate'  '145.572'
                                        'duration'  '423'
                                          'artist'  'Ludwig van Beethoven'
                                     'text_people'  ''
                                         'release'  'Piano Sonatas Op. 13, 27/2, & 53 - Dubravka Tomsic - Piano'
                                           'title'  "2 'Moonlight' - presto agitat"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
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                                      'lastfmtags'  "['instrumental', 'composers', 'romantic', 'classical', 'classic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '9'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '139.2'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '7B0D4509'
'TALB' (Album/Movie/Show title)                     'Piano Sonatas Op. 13, 27/2, & 53 - Dubravka Tomsic - Piano'
'TBPM' (BPM (beats per minute))                     '139.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         "2 'Moonlight' - presto agitat"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ludwig van Beethoven'
'TRCK' (Track number/Position in set)               '3/9'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'composers', 'romantic', 'classical', 'classic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.57 dB'
'TXXX:replaygain_track_peak'                        '0.843447'

========================== row from database ==========================
                                              'id'  1518301
                                            'path'  /data/Music/Bulk/00instruments-classical/Beethoven/Piano Sonatas Op. 13, 27-2, & 53 - Dubravka Tomsic - Piano/03 - 2 _Moonlight_ - presto agitat.mp3
                                         'working'  None
                                         'bitrate'  145
                                    'duration_sec'  423
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  7710112
                                           'mtime'  1637329778
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 03 _Moonlight_ prerock classical or classical instruments
                                      'tag_artist'  Ludwig van Beethoven
                                     'tag_release'  Piano Sonatas Op. 13, 27/2, & 53 - Dubravka Tomsic - Piano
                                       'tag_title'  2 'Moonlight' - presto agitat
                                             'bpm'  139.2
                                    'search_title'  '2':1 'agitat':5 'moonlight':2,3 'presto':4
                                   'search_artist'  'beethoven':3 'ludwig':1 'van':2
                                  'search_release'  '13':5,6 '2':8 '27':7 '272':9 '53':10 'dubravka':11 'op':3,4 'piano':1 'sonatas':2 'tomsic':12
                                     'search_rest'  '00instruments':1 'classical':2 'instruments':6 'moonlight':3 'or':5 'prerock':4
                                    'search_combo'  '00instruments':21 '13':13C,14C '2':1A,16C '27':15C '272':17C '53':18C 'agitat':5A 'beethoven':8B 'classical':22 'dubravka':19C 'instruments':26 'ludwig':6B 'moonlight':2A,3A,23 'op':11C,12C 'or':25 'piano':9C 'prerock':24 'presto':4A 'sonatas':10C 'tomsic':20C 'van':7B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'composers', 'romantic', 'classical', 'classic']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329777.7522013  (2021-11-19 14:49:37)
                             'size'  7710112