======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '174'
                                          'artist'  'Hugo Winterhalter & His Orchestra with Eddie Heywood'
                                     'text_people'  ''
                                         'release'  "Nipper's Greatest Hits: The 50's, Vol. 2"
                                           'title'  'Canadian Sunset'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-3', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '021'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '118.984'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     "Nipper's Greatest Hits: The 50's, Vol. 2"
'TBPM' (BPM (beats per minute))                     '118.984'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Canadian Sunset'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '175000'
'TPE1' (Lead performer(s)/Soloist(s))               'Hugo Winterhalter & His Orchestra with Eddie Heywood'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '021'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.59 dB'
'TXXX:replaygain_track_peak'                        '0.503254'

========================== row from database ==========================
                                              'id'  1449231
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-021 - Hugo Winterhalter & His Orchestra with Eddie Heywood - Canadian Sunset.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  174
                                           'genre'  prerock-swing
                                        'filesize'  6999352
                                           'mtime'  1620562561
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 021 prerock swing
                                      'tag_artist'  Hugo Winterhalter & His Orchestra with Eddie Heywood
                                     'tag_release'  Nipper's Greatest Hits: The 50's, Vol. 2
                                       'tag_title'  Canadian Sunset
                                             'bpm'  118.984
                                    'search_title'  'canadian':1 'sunset':2
                                   'search_artist'  'eddie':6 'heywood':7 'his':3 'hugo':1 'orchestra':4 'winterhalter':2 'with':5
                                  'search_release'  '2':13 '50':8 '50s':10 'greatest':4 'hits':5,6 'nipper':1 'nippers':3 's':2,9 'the':7 'vol':11,12
                                     'search_rest'  '00oldiepop':5 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':27 '1956':28 '2':22C '50':17C '50s':19C 'canadian':1A 'country':26 'eddie':8B 'exotica':24 'greatest':13C 'heywood':9B 'his':5B 'hits':14C,15C 'hugo':3B 'jazz':23 'nipper':10C 'nippers':12C 'oldies':25 'orchestra':6B 'prerock':29 's':11C,18C 'sunset':2A 'swing':30 'the':16C 'vol':20C,21C 'winterhalter':4B 'with':7B
                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562560.6494431  (2021-05-09 14:16:00)
                             'size'  6999352