======================== unified (from filesystem) ========================
                                         'bitrate'  '97.632'
                                        'duration'  '152'
                                          'artist'  'Jim Reeves'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'am i that e-z 2 forget?'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
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                                      'lastfmtags'  "['classic country', 'oldies', 'country', 'male vocalists', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '139.658'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'am i that e-z 2 forget?'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jim Reeves'
'TPOS' (Part of a set)                              '1/1'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:AverageLevel'                                 '4808'
'TXXX:PeakValue'                                    '32766'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic country', 'oldies', 'country', 'male vocalists', 'christmas']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.529454'

========================== row from database ==========================
                                              'id'  967826
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Jim Reeves - AM I THAT EASY TO FORGET.wma.mp3
                                         'working'  None
                                         'bitrate'  97
                                    'duration_sec'  152
                                           'genre'  loc-namerica-country
                                        'filesize'  1868192
                                           'mtime'  1621628169
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music AM I THAT EASY TO FORGET.wma loc namerica country
                                      'tag_artist'  Jim Reeves
                                     'tag_release'  None
                                       'tag_title'  am i that e-z 2 forget?
                                             'bpm'  139.658
                                    'search_title'  '2':7 'am':1 'e':4 'ez':6 'forget':8 'i':2 'that':3 'z':5
                                   'search_artist'  'jim':1 'reeves':2
                                  'search_release'  
                                     'search_rest'  'am':7 'country':4 'easy':10 'exotica':2 'forget':12 'forgetwma':14 'i':8 'jazz':1 'loc':15 'music':6 'namerica':16 'old':5 'oldies':3 'that':9 'to':11 'wma':13
                                    'search_combo'  '2':7A 'am':1A,17 'country':14 'e':4A 'easy':20 'exotica':12 'ez':6A 'forget':8A,22 'forgetwma':24 'i':2A,18 'jazz':11 'jim':9B 'loc':25 'music':16 'namerica':26 'old':15 'oldies':13 'reeves':10B 'that':3A,19 'to':21 'wma':23 'z':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic country', 'oldies', 'country', 'male vocalists', 'christmas']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628168.8038855  (2021-05-21 22:16:08)
                             'size'  1868192