======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  'Ben Selvin'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Dreamy Melody'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-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-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz classics', 'all', 'swing', 'oldies', 'big band swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '130.6'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TBPM' (BPM (beats per minute))                     '130.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1923-06'
'TIT2' (Title/songname/content description)         'Dreamy Melody'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '178000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ben Selvin'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz classics', 'all', 'swing', 'oldies', 'big band swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.488630'

========================== row from database ==========================
                                              'id'  1461473
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Ben Selvin - Dreamy Melody -6-1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-band
                                        'filesize'  3704016
                                           'mtime'  1620559855
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 6 1923 prerock band
                                      'tag_artist'  Ben Selvin
                                     'tag_release'  None
                                       'tag_title'  Dreamy Melody
                                             'bpm'  130.6
                                    'search_title'  'dreamy':1 'melody':2
                                   'search_artist'  'ben':1 'selvin':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1923':6 '6':7 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':9 '1923':10 '6':11 'band':13 'ben':3B 'country':8 'dreamy':1A 'exotica':6 'jazz':5 'melody':2A 'oldies':7 'prerock':12 'selvin':4B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz classics', 'all', 'swing', 'oldies', 'big band swing']
                                        'tag_date'  1923
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559854.9271388  (2021-05-09 13:30:54)
                             'size'  3704016