======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '185'
                                          'artist'  'Coleman Hawkins & Ramblers'
                                     'text_people'  ''
                                         'release'  'Decca Mx AM 376-2 unissued'
                                           'title'  'I Wanna Go Back To Harlem'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'saxophone', 'bebop', 'swing', 'tenor sax']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '110.1'
                                             'key'  '4A'
                                        '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)                     'Decca Mx AM 376-2 unissued'
'TBPM' (BPM (beats per minute))                     '110.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1937-04-26'
'TIT2' (Title/songname/content description)         'I Wanna Go Back To Harlem'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '185000'
'TPE1' (Lead performer(s)/Soloist(s))               'Coleman Hawkins & Ramblers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'saxophone', 'bebop', 'swing', 'tenor sax']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.526342'

========================== row from database ==========================
                                              'id'  1469262
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/Coleman Hawkins & Ramblers - I Wanna Go Back To Harlem 26-4-1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  185
                                           'genre'  prerock-swing
                                        'filesize'  3791050
                                           'mtime'  1620561079
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 26 4 1937 prerock swing
                                      'tag_artist'  Coleman Hawkins & Ramblers
                                     'tag_release'  Decca Mx AM 376-2 unissued
                                       'tag_title'  I Wanna Go Back To Harlem
                                             'bpm'  110.1
                                    'search_title'  'back':4 'go':3 'harlem':6 'i':1 'to':5 'wanna':2
                                   'search_artist'  'coleman':1 'hawkins':2 'ramblers':3
                                  'search_release'  '2':5 '376':4 '3762':6 'am':3 'decca':1 'mx':2 'unissued':7
                                     'search_rest'  '00oldiepop':5 '1937':6 '26':7 '4':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':21 '1937':22 '2':14C '26':23 '376':13C '3762':15C '4':24 'am':12C 'back':4A 'coleman':7B 'country':20 'decca':10C 'exotica':18 'go':3A 'harlem':6A 'hawkins':8B 'i':1A 'jazz':17 'mx':11C 'oldies':19 'prerock':25 'ramblers':9B 'swing':26 'to':5A 'unissued':16C 'wanna':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'saxophone', 'bebop', 'swing', 'tenor sax']
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561078.6559305  (2021-05-09 13:51:18)
                             'size'  3791050