======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '198'
                                          'artist'  'David Bowie'
                                     'text_people'  'David Bowie'
                                         'release'  'Bowie At The Beeb [Disc 1]'
                                           'title'  'Memory Of A Free Festival'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos;set-pl-sced'
                                             'bpm'  '135.637'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TALB' (Album/Movie/Show title)                     'Bowie At The Beeb [Disc 1]'
'TBPM' (BPM (beats per minute))                     '135.637'
'TCOM' (Composer)                                   'David Bowie'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDRC' (Recording time)                             '2000-01-01'
'TIT2' (Title/songname/content description)         'Memory Of A Free Festival'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.53 dB'
'TXXX:replaygain_track_peak'                        '0.409272'

========================== row from database ==========================
                                              'id'  402245
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[2000] Bowie At The Beeb [Disc 1]/12 Memory Of A Free Festival.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  198
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  6432246
                                           'mtime'  1636400827
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [2000] 12 ifs songwriter eos;set pl sced
                                      'tag_artist'  David Bowie
                                     'tag_release'  Bowie At The Beeb [Disc 1]
                                       'tag_title'  Memory Of A Free Festival
                                             'bpm'  135.637
                                    'search_title'  'a':3 'festival':5 'free':4 'memory':1 'of':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  '1':7,8 'at':2 'beeb':4 'bowie':1 'disc':5,6 'the':3
                                     'search_rest'  '00singer':1 '2000':4,5 'eos':3,7,9 'ifs':6 'pl':11 'sced':12 'set':8,10 'songwriter':2
                                    'search_combo'  '00singer':16 '1':14C,15C '2000':19,20 'a':3A 'at':9C 'beeb':11C 'bowie':7B,8C 'david':6B 'disc':12C,13C 'eos':18,22,24 'festival':5A 'free':4A 'ifs':21 'memory':1A 'of':2A 'pl':26 'sced':27 'set':23,25 'songwriter':17 'the':10C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400826.9960742  (2021-11-08 20:47:06)
                             'size'  6432246