======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '148'
                                          'artist'  'Len Fillis'
                                     'text_people'  ''
                                         'release'  'Eclipse  510'
                                           'title'  'In The Valley Of The Moon (Honolulu Serenaders vocal - Bobby Sanders'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['banjo', 'ragtime', 'schellack-schatz']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '104.068'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Eclipse  510'
'TBPM' (BPM (beats per minute))                     '104.068'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         'In The Valley Of The Moon (Honolulu Serenaders vocal - Bobby Sanders'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Len Fillis'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['banjo', 'ragtime', 'schellack-schatz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.32 dB'
'TXXX:replaygain_track_peak'                        '0.466036'

========================== row from database ==========================
                                              'id'  1453243
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Len Fillis - In The Valley Of The Moon (Honolulu Serenaders, vocal - Bobby Sanders -9-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  148
                                           'genre'  prerock-unsorted
                                        'filesize'  2977586
                                           'mtime'  1620386041
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 Serenaders, 9 1933 prerock unsorted
                                      'tag_artist'  Len Fillis
                                     'tag_release'  Eclipse  510
                                       'tag_title'  In The Valley Of The Moon (Honolulu Serenaders vocal - Bobby Sanders
                                             'bpm'  104.068
                                    'search_title'  'bobby':10 'honolulu':6,7 'in':1 'moon':5 'of':4 'sanders':11 'serenaders':8 'the':2 'valley':3 'vocal':9
                                   'search_artist'  'fillis':2 'len':1
                                  'search_release'  '510':2 'eclipse':1
                                     'search_rest'  '00oldiepop':5 '1933':6 '9':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'serenaders':7,8 'unsorted':11
                                    'search_combo'  '00oldiepop':20 '1933':21 '510':15C '9':24 'bobby':10A 'country':19 'eclipse':14C 'exotica':17 'fillis':13B 'honolulu':6A,7A 'in':1A 'jazz':16 'len':12B 'moon':5A 'of':4A 'oldies':18 'prerock':25 'sanders':11A 'serenaders':8A,22,23 'the':2A 'unsorted':26 'valley':3A 'vocal':9A
                                    'tag_tracknum'  None
                                      '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['banjo', 'ragtime', 'schellack-schatz']
                                        'tag_date'  1933
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620386040.5011132  (2021-05-07 13:14:00)
                             'size'  2977586