======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Al Bowlly'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'My Melancholy Baby (soundtrack) (piano - Monia Liter)'
                                           'quals'  ("['Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-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-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '145.5'
                                             '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'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'My Melancholy Baby (soundtrack) (piano - Monia Liter)'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '187000'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Bowlly'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.04 dB'
'TXXX:replaygain_track_peak'                        '0.527556'

========================== row from database ==========================
                                              'id'  1468855
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/Al Bowlly - My Melancholy Baby (Monia Liter - soundtrack) 1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-vocal
                                        'filesize'  3799021
                                           'mtime'  1620385080
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1935 (Monia 1935 prerock vocal
                                      'tag_artist'  Al Bowlly
                                     'tag_release'  None
                                       'tag_title'  My Melancholy Baby (soundtrack) (piano - Monia Liter)
                                             'bpm'  145.5
                                    'search_title'  'baby':3 'liter':9,10 'melancholy':2 'monia':8 'my':1 'piano':6,7 'soundtrack':4,5
                                   'search_artist'  'al':1 'bowlly':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1935':6 'country':4 'exotica':2 'jazz':1 'monia':7,8 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':17 '1935':18 'al':11B 'baby':3A 'bowlly':12B 'country':16 'exotica':14 'jazz':13 'liter':9A,10A 'melancholy':2A 'monia':8A,19,20 'my':1A 'oldies':15 'piano':6A,7A 'prerock':21 'soundtrack':4A,5A 'vocal':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385080.0963738  (2021-05-07 12:58:00)
                             'size'  3799021