======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '43'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Bird Songs of Southeastern Arizona and Sonora, Mexico CD2'
                                           'title'  "Virginia's Warbler"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'nonmusic-fragments-sounds and sfx'
                                             'bpm'  '100.906'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bird Songs of Southeastern Arizona and Sonora, Mexico CD2'
'TBPM' (BPM (beats per minute))                     '100.906'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-fragments-sounds and sfx'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         "Virginia's Warbler"
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.04 dB'
'TXXX:replaygain_track_peak'                        '0.226971'

========================== row from database ==========================
                                              'id'  1511249
                                            'path'  /data/Music/Bulk/0nonmusic/00sounds/BirdSongsArizona Mexico#2/03-Virginia_s Warbler.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  43
                                           'genre'  nonmusic-fragments-sounds and sfx
                                        'filesize'  1035242
                                           'mtime'  1621696444
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00sounds BirdSongsArizona Mexico#2 03 Virginia_s nonmusic fragments sounds sfx
                                      'tag_artist'  [unknown]
                                     'tag_release'  Bird Songs of Southeastern Arizona and Sonora, Mexico CD2
                                       'tag_title'  Virginia's Warbler
                                             'bpm'  100.906
                                    'search_title'  's':2 'virginia':1 'virginias':3 'warbler':4
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'and':6 'arizona':5 'bird':1 'cd2':10 'mexico':9 'of':3 'songs':2 'sonora':7,8 'southeastern':4
                                     'search_rest'  '00sounds':2 '0nonmusic':1 '2':5,7 'arizona':16 'bird':14 'birdsongsarizona':3 'fragments':11 'mexico':4,6 'nonmusic':10 's':9 'sfx':13 'songs':15 'sounds':12 'virginia':8
                                    'search_combo'  '00sounds':18 '0nonmusic':17 '2':21,23 'and':12C 'arizona':11C,32 'bird':7C,30 'birdsongsarizona':19 'cd2':16C 'fragments':27 'mexico':15C,20,22 'nonmusic':26 'of':9C 's':2A,25 'sfx':29 'songs':8C,31 'sonora':13C,14C 'sounds':28 'southeastern':10C 'unknown':5B,6B 'virginia':1A,24 'virginias':3A 'warbler':4A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696443.9839468  (2021-05-22 17:14:03)
                             'size'  1035242