======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '44'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Bird Songs of Southeastern Arizona and Sonora, Mexico CD2'
                                           'title'  'Black-throated Gray Warbler'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'nonmusic-fragments-sounds and sfx'
                                             'bpm'  '143.823'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bird Songs of Southeastern Arizona and Sonora, Mexico CD2'
'TBPM' (BPM (beats per minute))                     '143.823'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-fragments-sounds and sfx'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Black-throated Gray Warbler'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.88 dB'
'TXXX:replaygain_track_peak'                        '0.336562'

========================== row from database ==========================
                                              'id'  942531
                                            'path'  /data/Music/Bulk/0nonmusic/00sounds/BirdSongsArizona Mexico#2/07-BlackthroatedGrayWarbler.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  44
                                           'genre'  nonmusic-fragments-sounds and sfx
                                        'filesize'  1063454
                                           'mtime'  1621696445
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00sounds BirdSongsArizona Mexico#2 07 BlackthroatedGrayWarbler nonmusic fragments sounds sfx
                                      'tag_artist'  [unknown]
                                     'tag_release'  Bird Songs of Southeastern Arizona and Sonora, Mexico CD2
                                       'tag_title'  Black-throated Gray Warbler
                                             'bpm'  143.823
                                    'search_title'  'black':1 'blackthroated':3 'gray':4 'throated':2 'warbler':5
                                   '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':15 'bird':13 'birdsongsarizona':3 'blackthroated':16 'blackthroatedgraywarbler':8 'fragments':10 'gray':17 'mexico':4,6 'nonmusic':9 'sfx':12 'songs':14 'sounds':11 'warbler':18
                                    'search_combo'  '00sounds':19 '0nonmusic':18 '2':22,24 'and':13C 'arizona':12C,32 'bird':8C,30 'birdsongsarizona':20 'black':1A 'blackthroated':3A,33 'blackthroatedgraywarbler':25 'cd2':17C 'fragments':27 'gray':4A,34 'mexico':16C,21,23 'nonmusic':26 'of':10C 'sfx':29 'songs':9C,31 'sonora':14C,15C 'sounds':28 'southeastern':11C 'throated':2A 'unknown':6B,7B 'warbler':5A,35
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696444.667407  (2021-05-22 17:14:04)
                             'size'  1063454