======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '120'
                                          'artist'  'Tony Schwartz'
                                     'text_people'  ''
                                         'release'  'How To Record The Sound Of Children'
                                           'title'  'Introduction'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'nonmusic-speech;set-th-novelty'
                                             'bpm'  '87.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         '1'
'TALB' (Album/Movie/Show title)                     'How To Record The Sound Of Children'
'TBPM' (BPM (beats per minute))                     '87.0'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-speech', 'set-th-novelty']
'TIT2' (Title/songname/content description)         'Introduction'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tony Schwartz'
'TPE2' (Band/orchestra/accompaniment)               'Tony Schwartz'
'TRCK' (Track number/Position in set)               '01'
'TXXX:DATE'                                         '1967'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.36 dB'
'TXXX:replaygain_track_peak'                        '0.745656'

========================== row from database ==========================
                                              'id'  731482
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/tony schwartz - records the sound of children (folkways, 1967)/01 - introduction.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  120
                                           'genre'  nonmusic-speech;set-th-novelty
                                        'filesize'  3843968
                                           'mtime'  1637329900
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm tony schwartz records the sound of children (folkways, 1967) 01 introduction nonmusic speech;set th novelty
                                      'tag_artist'  Tony Schwartz
                                     'tag_release'  How To Record The Sound Of Children
                                       'tag_title'  Introduction
                                             'bpm'  87.0
                                    'search_title'  'introduction':1
                                   'search_artist'  'schwartz':2 'tony':1
                                  'search_release'  'children':7 'how':1 'of':6 'record':3 'sound':5 'the':4 'to':2
                                     'search_rest'  '1967':10,11 'children':7 'folkways':8,9 'introduction':12 'nonmusic':13 'novelty':19 'of':6 'records':3 'schwartz':2 'set':15,17 'sound':5 'speech':14,16 'th':18 'the':4 'tony':1
                                    'search_combo'  '1967':20,21 'children':10C,17 'folkways':18,19 'how':4C 'introduction':1A,22 'nonmusic':23 'novelty':29 'of':9C,16 'record':6C 'records':13 'schwartz':3B,12 'set':25,27 'sound':8C,15 'speech':24,26 'th':28 'the':7C,14 'to':5C 'tony':2B,11
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329899.554066  (2021-11-19 14:51:39)
                             'size'  3843968