======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  "Piron's New Orleans Orchestra"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Lou'siana Swing"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-3', '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-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['early jazz', 'new orleans', 'jazz', 'dixieland', 'all']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '101.8'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '101.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1924-02-18'
'TIT2' (Title/songname/content description)         "Lou'siana Swing"
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '186000'
'TPE1' (Lead performer(s)/Soloist(s))               "Piron's New Orleans Orchestra"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['early jazz', 'new orleans', 'jazz', 'dixieland', 'all']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.19 dB'
'TXXX:replaygain_track_peak'                        '0.575007'

========================== row from database ==========================
                                              'id'  1511474
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Piron_s New Orleans Orchestra - Lou_siana Swing 18-2-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-band
                                        'filesize'  3827756
                                           'mtime'  1620559915
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 Piron_s Lou_siana 18 2 1924 prerock band
                                      'tag_artist'  Piron's New Orleans Orchestra
                                     'tag_release'  None
                                       'tag_title'  Lou'siana Swing
                                             'bpm'  101.8
                                    'search_title'  'lou':1 'lousiana':3 'siana':2 'swing':4
                                   'search_artist'  'new':4 'orchestra':6 'orleans':5 'piron':1 'pirons':3 's':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '18':11 '1924':6 '2':12 'band':14 'country':4 'exotica':2 'jazz':1 'lou':9 'oldies':3 'piron':7 'prerock':13 's':8 'siana':10
                                    'search_combo'  '00oldiepop':15 '18':21 '1924':16 '2':22 'band':24 'country':14 'exotica':12 'jazz':11 'lou':1A,19 'lousiana':3A 'new':8B 'oldies':13 'orchestra':10B 'orleans':9B 'piron':5B,17 'pirons':7B 'prerock':23 's':6B,18 'siana':2A,20 'swing':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['early jazz', 'new orleans', 'jazz', 'dixieland', 'all']
                                        'tag_date'  1924
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559915.2632754  (2021-05-09 13:31:55)
                             'size'  3827756