======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '147'
                                          'artist'  "Donald O' Connor"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Make 'em Laugh (soundtrack ' Singin' In The Rain')"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', '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'  "['soundtrack', 'musical', 'musicals', 'showtunes', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1952'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '104.229'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '104.229'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1952'
'TIT2' (Title/songname/content description)         "Make 'em Laugh (soundtrack ' Singin' In The Rain')"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Donald O' Connor"
'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'                                   ['soundtrack', 'musical', 'musicals', 'showtunes', 'american']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                        '+3.49 dB'
'TXXX:replaygain_track_peak'                        '0.277529'

========================== row from database ==========================
                                              'id'  1498140
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1952/Donald O_ Connor - Make _em Laugh (soundtrack _ Singin_ In The Rain_) 1952.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  147
                                           'genre'  prerock-unsorted
                                        'filesize'  2944818
                                           'mtime'  1621698143
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1952 O_ _em _ Singin_ Rain_) 1952 prerock unsorted
                                      'tag_artist'  Donald O' Connor
                                     'tag_release'  None
                                       'tag_title'  Make 'em Laugh (soundtrack ' Singin' In The Rain')
                                             'bpm'  104.229
                                    'search_title'  'em':2,3 'in':9 'laugh':4 'make':1 'rain':11,12 'singin':7,8 'soundtrack':5,6 'the':10
                                   'search_artist'  'connor':4 'donald':1 'o':2,3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1952':6 'country':4 'em':8 'exotica':2 'jazz':1 'o':7 'oldies':3 'prerock':12 'rain':10,11 'singin':9 'unsorted':13
                                    'search_combo'  '00oldiepop':21 '1952':22 'connor':16B 'country':20 'donald':13B 'em':2A,3A,24 'exotica':18 'in':9A 'jazz':17 'laugh':4A 'make':1A 'o':14B,15B,23 'oldies':19 'prerock':28 'rain':11A,12A,26,27 'singin':7A,8A,25 'soundtrack':5A,6A 'the':10A 'unsorted':29
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['soundtrack', 'musical', 'musicals', 'showtunes', 'american']
                                        'tag_date'  1952
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698142.9880238  (2021-05-22 17:42:22)
                             'size'  2944818