======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '209'
                                          'artist'  'Leo Reisman & His Orchestra v/unidentified'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'Ah! Sweet Mystery of Life'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', '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-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '074'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '136.092'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ('Debuted 1928 and peaked at #7 on Various Charts. Source: Pop Memories. '
 'Label/Number: Columbia 1377.   \r\n')
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #7'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '136.092'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1928'
'TENC' (Encoded by)                                 'MusicProf'
'TIT2' (Title/songname/content description)         'Ah! Sweet Mystery of Life'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Leo Reisman & His Orchestra v/unidentified'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '074'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.20 dB'
'TXXX:replaygain_track_peak'                        '0.646387'
'UFID:'                                             UFID(owner='', data=b'XL\x00 1928_074')

========================== row from database ==========================
                                              'id'  978461
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_074 - Ah Sweet mystery of life - Leo Reisman and his orchestra.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  209
                                           'genre'  prerock-band
                                        'filesize'  3353573
                                           'mtime'  1620561404
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_074 mystery life and his orchestra prerock band
                                      'tag_artist'  Leo Reisman & His Orchestra v/unidentified
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Ah! Sweet Mystery of Life
                                             'bpm'  136.092
                                    'search_title'  'ah':1 'life':5 'mystery':3 'of':4 'sweet':2
                                   'search_artist'  'his':3 'leo':1 'orchestra':4 'reisman':2 'unidentified':6 'v':5 'vunidentified':7
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '074':6 '1928':5 'and':9 'band':13 'country':4 'exotica':2 'his':10 'jazz':1 'life':8 'mystery':7 'oldies':3 'orchestra':11 'prerock':12
                                    'search_combo'  '074':20 '1928':14C,19 'ah':1A 'and':23 'band':27 'billboard':13C 'country':18 'exotica':16 'his':8B,24 'jazz':15 'leo':6B 'life':5A,22 'mystery':3A,21 'of':4A 'oldies':17 'orchestra':9B,25 'prerock':26 'reisman':7B 'sweet':2A 'unidentified':11B 'v':10B 'vunidentified':12B
                                    'tag_tracknum'  74
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561403.7509599  (2021-05-09 13:56:43)
                             'size'  3353573