======================== unified (from filesystem) ========================
                                         'bitrate'  '102.061'
                                        'duration'  '176'
                                          'artist'  'Mccartt Brothers And Patterson'
                                     'text_people'  ''
                                         'release'  'Appalachian Stompdown'
                                           'title'  'Green Valley Waltz'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '136.092'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Appalachian Stompdown'
'TBPM' (BPM (beats per minute))                     '136.092'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Green Valley Waltz'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mccartt Brothers And Patterson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2'
'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: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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+4.54 dB'
'TXXX:replaygain_track_peak'                        '0.447481'

========================== row from database ==========================
                                              'id'  1111099
                                            'path'  /data/Music/Bulk/00localcharacter/Appalachian Stompdown/Appalachian Stompdown - Disc B/2-21 Green Valley Waltz.mp3
                                         'working'  None
                                         'bitrate'  102
                                    'duration_sec'  176
                                           'genre'  loc-namerica-country
                                        'filesize'  2261366
                                           'mtime'  1621629645
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Disc 2 21 loc namerica country
                                      'tag_artist'  Mccartt Brothers And Patterson
                                     'tag_release'  Appalachian Stompdown
                                       'tag_title'  Green Valley Waltz
                                             'bpm'  136.092
                                    'search_title'  'green':1 'valley':2 'waltz':3
                                   'search_artist'  'and':3 'brothers':2 'mccartt':1 'patterson':4
                                  'search_release'  'appalachian':1 'stompdown':2
                                     'search_rest'  '2':2 '21':3 'country':6 'disc':1 'loc':4 'namerica':5
                                    'search_combo'  '2':11 '21':12 'and':6B 'appalachian':8C 'brothers':5B 'country':15 'disc':10 'green':1A 'loc':13 'mccartt':4B 'namerica':14 'patterson':7B 'stompdown':9C 'valley':2A 'waltz':3A
                                    '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629644.687095  (2021-05-21 22:40:44)
                             'size'  2261366