======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Ukulele Orchestra of Great Britain'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Smells Like Teen Spirit'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['ukulele', 'folk', 'british', 'cover', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-novelty-styledcovers;mi-ukulele;set-cover or covered'
                                             'bpm'  '118.984'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '118.984'
'TCON' (Content type, a.k.a. Genre)                 ['set-th-novelty-styledcovers', 'mi-ukulele', 'set-cover or covered']
'TIT2' (Title/songname/content description)         'Smells Like Teen Spirit'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ukulele Orchestra of Great Britain'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ukulele', 'folk', 'british', 'cover', 'pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.45 dB'
'TXXX:replaygain_track_peak'                        '0.596705'

========================== row from database ==========================
                                              'id'  1345818
                                            'path'  /data/Music/Bulk/00spent/Ukelele Orchestra Of Great Britain/Ukelele Orchestra Of Great Britain, The__The Ukelele Orchestra Of Great Britain - Smells Like Teen Spirit.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  set-th-novelty-styledcovers;mi-ukulele;set-cover or covered
                                        'filesize'  6106646
                                           'mtime'  1620527973
                                   'redo_metaread'  0
                                        'rest_str'   00spent Ukelele Of Ukelele Of Britain, The__The Ukelele Of set th novelty styledcovers;mi ukulele;set cover or covered
                                      'tag_artist'  Ukulele Orchestra of Great Britain
                                     'tag_release'  None
                                       'tag_title'  Smells Like Teen Spirit
                                             'bpm'  118.984
                                    'search_title'  'like':2 'smells':1 'spirit':4 'teen':3
                                   'search_artist'  'britain':5 'great':4 'of':3 'orchestra':2 'ukulele':1
                                  'search_release'  
                                     'search_rest'  '00spent':1 'britain':4,5 'cover':19 'covered':21 'mi':12,14 'novelty':10 'of':3 'or':20 'set':8,16,18 'styledcovers':11,13 'th':9 'the':6,7 'ukelele':2 'ukulele':15,17
                                    'search_combo'  '00spent':10 'britain':9B,13,14 'cover':28 'covered':30 'great':8B 'like':2A 'mi':21,23 'novelty':19 'of':7B,12 'or':29 'orchestra':6B 'set':17,25,27 'smells':1A 'spirit':4A 'styledcovers':20,22 'teen':3A 'th':18 'the':15,16 'ukelele':11 'ukulele':5B,24,26
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['ukulele', 'folk', 'british', 'cover', 'pop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527973.3155031  (2021-05-09 04:39:33)
                             'size'  6106646