======================== unified (from filesystem) ========================
                                         'bitrate'  '94.853'
                                        'duration'  '169'
                                          'artist'  'Grayson & Whitter'
                                     'text_people'  ''
                                         'release'  'Appalachian Stompdown - Disc A'
                                           'title'  "Sweet Rose O'Grady"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'american', 'fiddle', '20s', 'folk']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '120.042'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Appalachian Stompdown - Disc A'
'TBPM' (BPM (beats per minute))                     '120.042'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         "Sweet Rose O'Grady"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Grayson & Whitter'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1'
'TRCK' (Track number/Position in set)               '21'
'TXXX:Encoding Params'                              'vers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['country', 'american', 'fiddle', '20s', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.76 dB'
'TXXX:replaygain_track_peak'                        '0.471438'

========================== row from database ==========================
                                              'id'  1496954
                                            'path'  /data/Music/Bulk/00localcharacter/Appalachian Stompdown/Appalachian Stompdown - Disc A/1-21 Sweet Rose O_Grady.mp3
                                         'working'  None
                                         'bitrate'  94
                                    'duration_sec'  169
                                           'genre'  loc-namerica-country
                                        'filesize'  2007715
                                           'mtime'  1621629639
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 1 21 O_Grady loc namerica country
                                      'tag_artist'  Grayson & Whitter
                                     'tag_release'  Appalachian Stompdown - Disc A
                                       'tag_title'  Sweet Rose O'Grady
                                             'bpm'  120.042
                                    'search_title'  'grady':4 'o':3 'ogrady':5 'rose':2 'sweet':1
                                   'search_artist'  'grayson':1 'whitter':2
                                  'search_release'  'a':4 'appalachian':1 'disc':3 'stompdown':2
                                     'search_rest'  '1':1 '21':2 'country':7 'grady':4 'loc':5 'namerica':6 'o':3
                                    'search_combo'  '1':12 '21':13 'a':11C 'appalachian':8C 'country':18 'disc':10C 'grady':4A,15 'grayson':6B 'loc':16 'namerica':17 'o':3A,14 'ogrady':5A 'rose':2A 'stompdown':9C 'sweet':1A 'whitter':7B
                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'american', 'fiddle', '20s', 'folk']
                                        'tag_date'  2006
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621629639.0003397  (2021-05-21 22:40:39)
                             'size'  2007715