======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '162'
                                          'artist'  'Kanui & Lula'
                                     'text_people'  ''
                                         'release'  'Vintage Hawaiian Music: Steel Guitar Masters 1928 - 1934'
                                           'title'  'My Little Grass Shack'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', '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']")
                                      'lastfmtags'  "['high', 'all', 'i want back to the 20s', 'folk', 'hawaiian']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'loc-islands-hawaii;set-pl-mor'
                                             'bpm'  '105.149'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Vintage Hawaiian Music: Steel Guitar Masters 1928 - 1934'
'TBPM' (BPM (beats per minute))                     '105.149'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 ['loc-islands-hawaii', 'set-pl-mor']
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         'My Little Grass Shack'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kanui & Lula'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'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:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['high', 'all', 'i want back to the 20s', 'folk', 'hawaiian']
'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'                        '+1.79 dB'
'TXXX:replaygain_track_peak'                        '0.577488'

========================== row from database ==========================
                                              'id'  1396656
                                            'path'  /data/Music/Bulk/00localcharacter/00islands/Vintage Hawaiian Music - Steel guitar masters 1928-34/Kanui & Lula - My little grass shack.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  162
                                           'genre'  loc-islands-hawaii;set-pl-mor
                                        'filesize'  3909349
                                           'mtime'  1620535385
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00islands guitar masters little grass shack loc islands hawaii;set pl mor
                                      'tag_artist'  Kanui & Lula
                                     'tag_release'  Vintage Hawaiian Music: Steel Guitar Masters 1928 - 1934
                                       'tag_title'  My Little Grass Shack
                                             'bpm'  105.149
                                    'search_title'  'grass':3 'little':2 'my':1 'shack':4
                                   'search_artist'  'kanui':1 'lula':2
                                  'search_release'  '1928':8 '1934':9 'guitar':6 'hawaiian':2 'masters':7 'music':3,4 'steel':5 'vintage':1
                                     'search_rest'  '00islands':1 'grass':5 'guitar':2 'hawaii':9,11 'islands':8 'little':4 'loc':7 'masters':3 'mor':14 'pl':13 'set':10,12 'shack':6
                                    'search_combo'  '00islands':16 '1928':14C '1934':15C 'grass':3A,20 'guitar':12C,17 'hawaii':24,26 'hawaiian':8C 'islands':23 'kanui':5B 'little':2A,19 'loc':22 'lula':6B 'masters':13C,18 'mor':29 'music':9C,10C 'my':1A 'pl':28 'set':25,27 'shack':4A,21 'steel':11C 'vintage':7C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', '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'  ['high', 'all', 'i want back to the 20s', 'folk', 'hawaiian']
                                        'tag_date'  1930
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620535384.872115  (2021-05-09 06:43:04)
                             'size'  3909349