======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '204'
                                          'artist'  'Bob Wills'
                                     'text_people'  ''
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                                           'title'  "The Devil Ain't Lazy (W/Bob Dylan Intro)"
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                                      'lastfmtags'  "['classic country', 'country', 'all', 'texas', 'western swing']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '18'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '89.414'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000840 0000000000898FB0 00000000 00000000 00000000 '
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'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TENC' (Encoded by)                                 'iTunes v6.0.5'
'TIT2' (Title/songname/content description)         "The Devil Ain't Lazy (W/Bob Dylan Intro)"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Wills'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '6/18'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['classic country', 'country', 'all', 'texas', 'western swing']
'TXXX:q-bass'                                       '1'
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'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.437019'

========================== row from database ==========================
                                              'id'  1499303
                                            'path'  /data/Music/Bulk/0nonmusic/TTRH-14-Devil/06. Bob Wills - The Devil Ain_t Lazy (W_Bob Dylan Intro).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  204
                                           'genre'  set-th-novelty
                                        'filesize'  4091821
                                           'mtime'  1621630330
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic TTRH 06. Ain_t (W_Bob set th novelty
                                      'tag_artist'  Bob Wills
                                     'tag_release'  Bob Dylan - Theme Time 14 Devil
                                       'tag_title'  The Devil Ain't Lazy (W/Bob Dylan Intro)
                                             'bpm'  89.414
                                    'search_title'  'ain':3 'aint':5 'bob':8 'devil':2 'dylan':10 'intro':11,12 'lazy':6 't':4 'the':1 'w':7 'wbob':9
                                   'search_artist'  'bob':1 'wills':2
                                  'search_release'  'bob':1 'devil':5 'dylan':2 'theme':3 'time':4
                                     'search_rest'  '06':3,4 '0nonmusic':1 'ain':5 'bob':8,10 'novelty':13 'set':11 't':6 'th':12 'ttrh':2 'w':7,9
                                    'search_combo'  '06':22,23 '0nonmusic':20 'ain':3A,24 'aint':5A 'bob':8A,13B,15C,27,29 'devil':2A,19C 'dylan':10A,16C 'intro':11A,12A 'lazy':6A 'novelty':32 'set':30 't':4A,25 'th':31 'the':1A 'theme':17C 'time':18C 'ttrh':21 'w':7A,26,28 'wbob':9A 'wills':14B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classic country', 'country', 'all', 'texas', 'western swing']
                                        'tag_date'  
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621630329.8154843  (2021-05-21 22:52:09)
                             'size'  4091821