======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '146'
                                          'artist'  'Guy Lombardo & His Royal Canedians & Skip Nelson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ("213 It's love-love-love - Guy Lombardo & His Royal Canedians & Skip Nelson "
 '(18-03-1944)')
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '213'
                                      'tracktotal'  ''
                                            'date'  '1944'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '115.589'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.589'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1944'
'TIT2' (Title/songname/content description)         ("213 It's love-love-love - Guy Lombardo & His Royal Canedians & Skip Nelson "
 '(18-03-1944)')
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Guy Lombardo & His Royal Canedians & Skip Nelson'
'TRCK' (Track number/Position in set)               '213'
'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'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.445911'

========================== row from database ==========================
                                              'id'  1510995
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/213 It_s love-love-love - Guy Lombardo & His Royal Canedians & Skip Nelson (18-03-1944).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  146
                                           'genre'  prerock-band
                                        'filesize'  2341430
                                           'mtime'  1620561061
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 It_s prerock band
                                      'tag_artist'  Guy Lombardo & His Royal Canedians & Skip Nelson
                                     'tag_release'  None
                                       'tag_title'  213 It's love-love-love - Guy Lombardo & His Royal Canedians & Skip Nelson (18-03-1944)
                                             'bpm'  115.589
                                    'search_title'  '03':17 '18':16 '18031944':19 '1944':18 '213':1 'canedians':13 'guy':9 'his':11 'it':2 'its':4 'lombardo':10 'love':5,6,7 'lovelovelove':8 'nelson':15 'royal':12 's':3 'skip':14
                                   'search_artist'  'canedians':5 'guy':1 'his':3 'lombardo':2 'nelson':7 'royal':4 'skip':6
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1943':6 'band':10 'country':4 'exotica':2 'it':7 'jazz':1 'oldies':3 'prerock':9 's':8
                                    'search_combo'  '00oldiepop':31 '03':17A '18':16A '18031944':19A '1943':32 '1944':18A '213':1A 'band':36 'canedians':13A,24B 'country':30 'exotica':28 'guy':9A,20B 'his':11A,22B 'it':2A,33 'its':4A 'jazz':27 'lombardo':10A,21B 'love':5A,6A,7A 'lovelovelove':8A 'nelson':15A,26B 'oldies':29 'prerock':35 'royal':12A,23B 's':3A,34 'skip':14A,25B
                                    'tag_tracknum'  213
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1944
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561060.6911786  (2021-05-09 13:51:00)
                             'size'  2341430