======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '146'
                                          'artist'  'Bobby Hamilton'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Crazy Eyes For You'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'oldies', 'r&b', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '84.070'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.070'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Crazy Eyes For You'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bobby Hamilton'
'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'                                   ['60s', 'oldies', 'r&b', '50s']
'TXXX:other'                                        '58-280'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.423765'

========================== row from database ==========================
                                              'id'  1444434
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-280 - Bobby Hamilton - Crazy Eyes For You.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  146
                                           'genre'  prerock-unsorted
                                        'filesize'  5844912
                                           'mtime'  1621698367
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 280 prerock unsorted
                                      'tag_artist'  Bobby Hamilton
                                     'tag_release'  None
                                       'tag_title'  Crazy Eyes For You
                                             'bpm'  84.07
                                    'search_title'  'crazy':1 'eyes':2 'for':3 'you':4
                                   'search_artist'  'bobby':1 'hamilton':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1958':6 '280':8 '58':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':11 '1958':12 '280':14 '58':13 'bobby':5B 'country':10 'crazy':1A 'exotica':8 'eyes':2A 'for':3A 'hamilton':6B 'jazz':7 'oldies':9 'prerock':15 'unsorted':16 'you':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           '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-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'oldies', 'r&b', '50s']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698367.4379961  (2021-05-22 17:46:07)
                             'size'  5844912