======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '191'
                                          'artist'  'Jack Hylton'
                                     'text_people'  ''
                                         'release'  'Decca F 3459'
                                           'title'  "Can't We Meet Again (vocal - Pat O' Malley)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', '1920s', 'jazz', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '121.701'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca F 3459'
'TBPM' (BPM (beats per minute))                     '121.701'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         "Can't We Meet Again (vocal - Pat O' Malley)"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack Hylton'
'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:lastfmtags'                                   ['big band', '1920s', 'jazz', 'oldies', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.39 dB'
'TXXX:replaygain_track_peak'                        '0.551374'

========================== row from database ==========================
                                              'id'  1499313
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Jack Hylton - Can_t We Meet Again (vocal - Pat O_ Malley) 6-2-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  191
                                           'genre'  prerock-band
                                        'filesize'  3833650
                                           'mtime'  1620560107
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 Can_t O_ 6 2 1933 prerock band
                                      'tag_artist'  Jack Hylton
                                     'tag_release'  Decca F 3459
                                       'tag_title'  Can't We Meet Again (vocal - Pat O' Malley)
                                             'bpm'  121.701
                                    'search_title'  'again':6 'can':1 'cant':3 'malley':12,13 'meet':5 'o':10,11 'pat':9 't':2 'vocal':7,8 'we':4
                                   'search_artist'  'hylton':2 'jack':1
                                  'search_release'  '3459':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1933':6 '2':11 '6':10 'band':13 'can':7 'country':4 'exotica':2 'jazz':1 'o':9 'oldies':3 'prerock':12 't':8
                                    'search_combo'  '00oldiepop':23 '1933':24 '2':29 '3459':18C '6':28 'again':6A 'band':31 'can':1A,25 'cant':3A 'country':22 'decca':16C 'exotica':20 'f':17C 'hylton':15B 'jack':14B 'jazz':19 'malley':12A,13A 'meet':5A 'o':10A,11A,27 'oldies':21 'pat':9A 'prerock':30 't':2A,26 'vocal':7A,8A 'we':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['big band', '1920s', 'jazz', 'oldies', 'swing']
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560106.9897978  (2021-05-09 13:35:06)
                             'size'  3833650