======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  "Al Columbo's Golden Glade Orchestra"
                                     'text_people'  ''
                                         'release'  'Puritan 11060'
                                           'title'  'Nesting Time'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1920'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '88.515'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Puritan 11060'
'TBPM' (BPM (beats per minute))                     '88.515'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1920'
'TIT2' (Title/songname/content description)         'Nesting Time'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Al Columbo's Golden Glade Orchestra"
'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: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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.465385'

========================== row from database ==========================
                                              'id'  1497417
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920/Al Columbo_s Golden Glade Orchestra - Nesting Time 1921.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-swing
                                        'filesize'  3577502
                                           'mtime'  1620559341
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920 Columbo_s 1921 prerock swing
                                      'tag_artist'  Al Columbo's Golden Glade Orchestra
                                     'tag_release'  Puritan 11060
                                       'tag_title'  Nesting Time
                                             'bpm'  88.515
                                    'search_title'  'nesting':1 'time':2
                                   'search_artist'  'al':1 'columbo':2 'columbos':4 'glade':6 'golden':5 'orchestra':7 's':3
                                  'search_release'  '11060':2 'puritan':1
                                     'search_rest'  '00oldiepop':5 '1920':6 '1921':9 'columbo':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 's':8 'swing':11
                                    'search_combo'  '00oldiepop':16 '11060':11C '1920':17 '1921':20 'al':3B 'columbo':4B,18 'columbos':6B 'country':15 'exotica':13 'glade':8B 'golden':7B 'jazz':12 'nesting':1A 'oldies':14 'orchestra':9B 'prerock':21 'puritan':10C 's':5B,19 'swing':22 'time':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1920
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559340.505753  (2021-05-09 13:22:20)
                             'size'  3577502