======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '317'
                                          'artist'  'Tony Schwartz'
                                     'text_people'  ''
                                         'release'  'How To Record The Sound Of Children'
                                           'title'  'Sound Snapshots'
                                           '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', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'nonmusic-speech;set-th-novelty'
                                             'bpm'  '138.1'
                                             'key'  '12A'
                                        '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))                     '138.1'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-speech', 'set-th-novelty']
'TIT2' (Title/songname/content description)         'Sound Snapshots'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tony Schwartz'
'TPE2' (Band/orchestra/accompaniment)               'Tony Schwartz'
'TRCK' (Track number/Position in set)               '08'
'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'                        '+2.74 dB'
'TXXX:replaygain_track_peak'                        '0.632027'

========================== row from database ==========================
                                              'id'  731506
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/tony schwartz - records the sound of children (folkways, 1967)/08 - sound snapshots.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  317
                                           'genre'  nonmusic-speech;set-th-novelty
                                        'filesize'  10147712
                                           'mtime'  1637329900
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm tony schwartz records the sound of children (folkways, 1967) 08 sound snapshots nonmusic speech;set th novelty
                                      'tag_artist'  Tony Schwartz
                                     'tag_release'  How To Record The Sound Of Children
                                       'tag_title'  Sound Snapshots
                                             'bpm'  138.1
                                    'search_title'  'snapshots':2 'sound':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 'nonmusic':13 'novelty':19 'of':6 'records':3 'schwartz':2 'set':15,17 'snapshots':12 'sound':5 'speech':14,16 'th':18 'the':4 'tony':1
                                    'search_combo'  '1967':21,22 'children':11C,18 'folkways':19,20 'how':5C 'nonmusic':24 'novelty':30 'of':10C,17 'record':7C 'records':14 'schwartz':4B,13 'set':26,28 'snapshots':2A,23 'sound':1A,9C,16 'speech':25,27 'th':29 'the':8C,15 'to':6C 'tony':3B,12
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  12A
                                           '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'  1637329900.390452  (2021-11-19 14:51:40)
                             'size'  10147712