======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '126'
                                          'artist'  'Dickie Valentine'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Christmas Alphabet'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'male vocalists', 'pop', '60s', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-male;set-th-christmas'
                                             'bpm'  '87.182'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '87.182'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal-male', 'set-th-christmas']
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Christmas Alphabet'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dickie Valentine'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'male vocalists', 'pop', '60s', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+2.29 dB'
'TXXX:replaygain_track_peak'                        '0.475559'

========================== row from database ==========================
                                              'id'  1438783
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Dickie Valentine - Christmas Alphabet 25-11-1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  126
                                           'genre'  prerock-vocal-male;set-th-christmas
                                        'filesize'  2533051
                                           'mtime'  1621625774
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 25 11 1955 prerock vocal male;set th christmas
                                      'tag_artist'  Dickie Valentine
                                     'tag_release'  None
                                       'tag_title'  Christmas Alphabet
                                             'bpm'  87.182
                                    'search_title'  'alphabet':2 'christmas':1
                                   'search_artist'  'dickie':1 'valentine':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1955':6 '25':7 'christmas':15 'country':4 'exotica':2 'jazz':1 'male':10,12 'oldies':3 'prerock':8 'set':11,13 'th':14 'vocal':9
                                    'search_combo'  '00oldiepop':9 '1955':10 '25':11 'alphabet':2A 'christmas':1A,19 'country':8 'dickie':3B 'exotica':6 'jazz':5 'male':14,16 'oldies':7 'prerock':12 'set':15,17 'th':18 'valentine':4B 'vocal':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', '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-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'male vocalists', 'pop', '60s', 'easy listening']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625774.4298801  (2021-05-21 21:36:14)
                             'size'  2533051