======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '314'
                                          'artist'  'Earl Hines'
                                     'text_people'  ''
                                         'release'  'radio jazz 13'
                                           'title'  "Rockin' Chair"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'Q-PLAY-2', 'q-bass-1', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-4', 'q-vocals-1', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['jazz piano', 'jazz', 'big band', 'swing', 'piano jazz', 'piano']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '93.5'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'radio jazz 13'
'TBPM' (BPM (beats per minute))                     '93.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "Rockin' Chair"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Earl Hines'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Solo Art'
'TRCK' (Track number/Position in set)               '05'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, Fraunhofer acm, 320 kBit/s, 44.100 Hz, Stereo, HQ = on'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz piano', 'jazz', 'big band', 'swing', 'piano jazz', 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.03 dB'
'TXXX:replaygain_track_peak'                        '0.984703'

========================== row from database ==========================
                                              'id'  1496044
                                            'path'  /data/Music/Bulk/00poprockelectronic/radio jazz 13/Earl Hines - rockin_ chair.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  314
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  12594390
                                           'mtime'  1620574512
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic rockin_ chair prerock jb unsorted
                                      'tag_artist'  Earl Hines
                                     'tag_release'  radio jazz 13
                                       'tag_title'  Rockin' Chair
                                             'bpm'  93.5
                                    'search_title'  'chair':3 'rockin':1,2
                                   'search_artist'  'earl':1 'hines':2
                                  'search_release'  'jazz':2 'radio':1
                                     'search_rest'  '00poprockelectronic':1 'chair':3 'jb':5 'prerock':4 'rockin':2 'unsorted':6
                                    'search_combo'  '00poprockelectronic':8 'chair':3A,10 'earl':4B 'hines':5B 'jazz':7C 'jb':12 'prerock':11 'radio':6C 'rockin':1A,2A,9 'unsorted':13
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-4', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  ['jazz piano', 'jazz', 'big band', 'swing', 'piano jazz', 'piano']
                                        'tag_date'  1971
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620574512.3816142  (2021-05-09 17:35:12)
                             'size'  12594390