======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Billy Murray & Ed Smalle'
                                     'text_people'  ''
                                         'release'  'Victor 19240'
                                           'title'  'Happy And Go-Lucky In My Old Kentucky Home (+ Virginians)'
                                           '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-3', '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'  "['proto exotica', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '125.8'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Victor 19240'
'TBPM' (BPM (beats per minute))                     '125.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1923-12-28'
'TIT2' (Title/songname/content description)         'Happy And Go-Lucky In My Old Kentucky Home (+ Virginians)'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '194000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Murray & Ed Smalle'
'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'                                   ['proto exotica', 'acoustic era']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                        '+0.98 dB'
'TXXX:replaygain_track_peak'                        '0.566392'

========================== row from database ==========================
                                              'id'  1458669
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Billy Murray & Ed Smalle - Happy And Go-Lucky In My Old Kentucky Home (+ Virginians) 28-12-1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  prerock-vocal
                                        'filesize'  3937094
                                           'mtime'  1620666387
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 28 12 1923 prerock vocal
                                      'tag_artist'  Billy Murray & Ed Smalle
                                     'tag_release'  Victor 19240
                                       'tag_title'  Happy And Go-Lucky In My Old Kentucky Home (+ Virginians)
                                             'bpm'  125.8
                                    'search_title'  'and':2 'go':3 'golucky':5 'happy':1 'home':10 'in':6 'kentucky':9 'lucky':4 'my':7 'old':8 'virginians':11,12
                                   'search_artist'  'billy':1 'ed':3 'murray':2 'smalle':4
                                  'search_release'  '19240':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1923':6 '28':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':23 '1923':24 '19240':18C '28':25 'and':2A 'billy':13B 'country':22 'ed':15B 'exotica':20 'go':3A 'golucky':5A 'happy':1A 'home':10A 'in':6A 'jazz':19 'kentucky':9A 'lucky':4A 'murray':14B 'my':7A 'old':8A 'oldies':21 'prerock':26 'smalle':16B 'victor':17C 'virginians':11A,12A 'vocal':27
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['proto exotica', 'acoustic era']
                                        'tag_date'  1923
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666387.2833405  (2021-05-10 19:06:27)
                             'size'  3937094