======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'John McCormack'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "I'm Falling In Love With Someone (Naughty Marietta)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', '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'  "['irish folk', 'celtic', 'classical', 'tenor']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1911'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-folk'
                                             'bpm'  '141.413'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '141.413'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-folk'
'TDRC' (Recording time)                             '1911'
'TIT2' (Title/songname/content description)         "I'm Falling In Love With Someone (Naughty Marietta)"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'John McCormack'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['irish folk', 'celtic', 'classical', 'tenor']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.594494'

========================== row from database ==========================
                                              'id'  1504975
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1911/John McCormack - I_m Falling In Love With Someone 17-4-1911.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-vocal-folk
                                        'filesize'  3729202
                                           'mtime'  1621625638
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1911 I_m 17 4 1911 prerock vocal folk
                                      'tag_artist'  John McCormack
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  I'm Falling In Love With Someone (Naughty Marietta)
                                             'bpm'  141.413
                                    'search_title'  'falling':4 'i':1 'im':3 'in':5 'love':6 'm':2 'marietta':11,12 'naughty':9,10 'someone':8 'with':7
                                   'search_artist'  'cormack':4 'john':1 'mc':3 'mccormack':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1911':6 '4':9 'country':4 'exotica':2 'folk':12 'i':7 'jazz':1 'm':8 'oldies':3 'prerock':10 'vocal':11
                                    'search_combo'  '00oldiepop':26 '1911':27 '4':30 'album':18C 'cormack':16B 'country':25 'exotica':23 'falling':4A 'folk':33 'i':1A,28 'im':3A 'in':5A 'jazz':22 'john':13B 'love':6A 'm':2A,29 'marietta':11A,12A 'mc':15B 'mccormack':14B 'naughty':9A,10A 'non':17C 'nonalbum':19C 'oldies':24 'prerock':31 'someone':8A 'tracks':20C,21C 'vocal':32 'with':7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['irish folk', 'celtic', 'classical', 'tenor']
                                        'tag_date'  1911
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625638.2238212  (2021-05-21 21:33:58)
                             'size'  3729202