======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'Carroll Gibbons'
                                     'text_people'  ''
                                         'release'  'Columbia FB  1697'
                                           'title'  'Medley From \x18 Swing High Swing Low \x18 (Boyfriends)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'female vocalists', '1401fh', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '112.508'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia FB  1697'
'TBPM' (BPM (beats per minute))                     '112.508'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1937'
'TIT2' (Title/songname/content description)         'Medley From \x18 Swing High Swing Low \x18 (Boyfriends)'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Carroll Gibbons'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.470252'

========================== row from database ==========================
                                              'id'  1433720
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/Carroll Gibbons - Medley from ‘ Swing High Swing Low ‘ (Boyfriends) -5-1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-swing
                                        'filesize'  3729202
                                           'mtime'  1620561061
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 from ‘ ‘ 5 1937 prerock swing
                                      'tag_artist'  Carroll Gibbons
                                     'tag_release'  Columbia FB  1697
                                       'tag_title'  Medley From  Swing High Swing Low  (Boyfriends)
                                             'bpm'  112.508
                                    'search_title'  'boyfriends':6,7 'from':2 'high':4 'low':5 'medley':1 'swing':3
                                   'search_artist'  'carroll':1 'gibbons':2
                                  'search_release'  '1697':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '1937':6 '5':8 'country':4 'exotica':2 'from':7 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':17 '1697':12C '1937':18 '5':20 'boyfriends':6A,7A 'carroll':8B 'columbia':10C 'country':16 'exotica':14 'fb':11C 'from':2A,19 'gibbons':9B 'high':4A 'jazz':13 'low':5A 'medley':1A 'oldies':15 'prerock':21 'swing':3A,22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561061.479581  (2021-05-09 13:51:01)
                             'size'  3729202