======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '168'
                                          'artist'  'Cellos'
                                     'text_people'  ''
                                         'release'  "Rock 'N' Roll Era - Street Corner Serenade I"
                                           'title'  'Rang Tang Ding Dong (I Am the Japanese Sandman)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['noise rock', 'canadian', 'canada', 'post-hardcore']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '326'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '105.149'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Rock 'N' Roll Era - Street Corner Serenade I"
'TBPM' (BPM (beats per minute))                     '105.149'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Rang Tang Ding Dong (I Am the Japanese Sandman)'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '168489'
'TPE1' (Lead performer(s)/Soloist(s))               'Cellos'
'TRCK' (Track number/Position in set)               '326'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['noise rock', 'canadian', 'canada', 'post-hardcore']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.75 dB'
'TXXX:replaygain_track_peak'                        '0.462580'

========================== row from database ==========================
                                              'id'  1433348
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-326 - Cellos - Rang Tang Ding Dong (I Am the Japanese Sandman).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  168
                                           'genre'  prerock-unsorted
                                        'filesize'  6742241
                                           'mtime'  1621698340
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 326 prerock unsorted
                                      'tag_artist'  Cellos
                                     'tag_release'  Rock 'N' Roll Era - Street Corner Serenade I
                                       'tag_title'  Rang Tang Ding Dong (I Am the Japanese Sandman)
                                             'bpm'  105.149
                                    'search_title'  'am':7 'ding':3 'dong':4 'i':5,6 'japanese':9 'rang':1 'sandman':10,11 'tang':2 'the':8
                                   'search_artist'  'cellos':1
                                  'search_release'  'corner':7 'era':5 'i':9 'n':2,3 'rock':1 'roll':4 'serenade':8 'street':6
                                     'search_rest'  '00oldiepop':5 '1957':6 '326':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':26 '1957':27 '326':28 'am':7A 'cellos':12B 'corner':19C 'country':25 'ding':3A 'dong':4A 'era':17C 'exotica':23 'i':5A,6A,21C 'japanese':9A 'jazz':22 'n':14C,15C 'oldies':24 'prerock':29 'rang':1A 'rock':13C 'roll':16C 'sandman':10A,11A 'serenade':20C 'street':18C 'tang':2A 'the':8A 'unsorted':30
                                    'tag_tracknum'  326
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['noise rock', 'canadian', 'canada', 'post-hardcore']
                                        'tag_date'  1957
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621698340.0786796  (2021-05-22 17:45:40)
                             'size'  6742241