======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '223'
                                          'artist'  'Duke Ellington'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Medley: I Let a Song Go Out of My Heart/Don't Get Around Much Anymore"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'piano', 'blues', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-pop'
                                             'bpm'  '84.951'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.951'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-pop'
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         "Medley: I Let a Song Go Out of My Heart/Don't Get Around Much Anymore"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Duke Ellington'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'piano', 'blues', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.61 dB'
'TXXX:replaygain_track_peak'                        '0.423505'

========================== row from database ==========================
                                              'id'  675394
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Duke Ellington/Duke Elington - Take The A Train.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  223
                                           'genre'  prerock-jb-jazz-pop
                                        'filesize'  5359258
                                           'mtime'  1620528490
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Elington Take The Train prerock jb jazz pop
                                      'tag_artist'  Duke Ellington
                                     'tag_release'  None
                                       'tag_title'  Medley: I Let a Song Go Out of My Heart/Don't Get Around Much Anymore
                                             'bpm'  84.951
                                    'search_title'  'a':5 'anymore':18 'around':16 'don':12 'get':15 'go':7 'heart':11 'heartdont':14 'i':3 'let':4 'medley':1,2 'much':17 'my':10 'of':9 'out':8 'song':6 't':13
                                   'search_artist'  'duke':1 'ellington':2
                                  'search_release'  
                                     'search_rest'  'country':4 'elington':5 'exotica':2 'jazz':1 'jb':10 'oldies':3 'pop':11 'prerock':9 'take':6 'the':7 'train':8
                                    'search_combo'  'a':5A 'anymore':18A 'around':16A 'country':24 'don':12A 'duke':19B 'elington':25 'ellington':20B 'exotica':22 'get':15A 'go':7A 'heart':11A 'heartdont':14A 'i':3A 'jazz':21 'jb':30 'let':4A 'medley':1A,2A 'much':17A 'my':10A 'of':9A 'oldies':23 'out':8A 'pop':31 'prerock':29 'song':6A 't':13A 'take':26 'the':27 'train':28
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'piano', 'blues', 'swing']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528490.4089582  (2021-05-09 04:48:10)
                             'size'  5359258