======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '131'
                                          'artist'  'Joanie Sommers'
                                     'text_people'  ''
                                         'release'  'Ultimate Christmas Music Collection : cd 8'
                                           'title'  'The Peppermint Engineer'
                                           'quals'  ("['Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-syn-1', "
 "'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-4', "
 "'q-other-3', 'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'pop', 'female vocalists', 'jazz', 'jazz vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'set-th-candy;set-th-christmas'
                                             'bpm'  '118.984'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:Amadeus II 3.5:pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA'  PRIV(owner='Amadeus II 3.5', data=b'pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA')
'TALB' (Album/Movie/Show title)                     'Ultimate Christmas Music Collection : cd 8'
'TBPM' (BPM (beats per minute))                     '118.984'
'TCON' (Content type, a.k.a. Genre)                 ['set-th-candy', 'set-th-christmas']
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'The Peppermint Engineer'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Joanie Sommers'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['60s', 'pop', 'female vocalists', 'jazz', 'jazz vocal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.693285'

========================== row from database ==========================
                                              'id'  735853
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Joanie Sommers - The Peppermint Engineer.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  131
                                           'genre'  set-th-candy;set-th-christmas
                                        'filesize'  3152738
                                           'mtime'  1620343117
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy;set th christmas
                                      'tag_artist'  Joanie Sommers
                                     'tag_release'  Ultimate Christmas Music Collection : cd 8
                                       'tag_title'  The Peppermint Engineer
                                             'bpm'  118.984
                                    'search_title'  'engineer':3 'peppermint':2 'the':1
                                   'search_artist'  'joanie':1 'sommers':2
                                  'search_release'  '8':6 'cd':5 'christmas':2 'collection':4 'music':3 'ultimate':1
                                     'search_rest'  'candy':8,10 'christmas':12 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6,9,11 'sweets':5 'th':7
                                    'search_combo'  '8':11C 'candy':19,21 'cd':10C 'christmas':7C,23 'collection':9C 'country':15 'engineer':3A 'exotica':13 'jazz':12 'joanie':4B 'music':8C 'oldies':14 'peppermint':2A 'set':17,20,22 'sommers':5B 'sweets':16 'th':18 'the':1A 'ultimate':6C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'pop', 'female vocalists', 'jazz', 'jazz vocal']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343116.7867565  (2021-05-07 01:18:36)
                             'size'  3152738