======================== unified (from filesystem) ========================
                                         'bitrate'  '56.0'
                                        'duration'  '179'
                                          'artist'  'Gene Austin Feat. Nat Shilkret & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'Just Like A Melody Out Of The Sky'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '044'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '115.326'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 8/18/1928 and peaked at #5 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 8/18/1928 and peaked'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '115.326'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'Just Like A Melody Out Of The Sky'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Gene Austin Feat. Nat Shilkret & His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '044'
'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'                                       '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.29 dB'
'TXXX:replaygain_track_peak'                        '0.751924'

========================== row from database ==========================
                                              'id'  978377
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_044 - Gene Austin Feat. Nat Shilkret & His Orchestra - Just Like A Melody Out Of The Sky 56 .mp3
                                         'working'  None
                                         'bitrate'  56
                                    'duration_sec'  179
                                           'genre'  prerock-swing
                                        'filesize'  1259392
                                           'mtime'  1620562687
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_044 56 prerock swing
                                      'tag_artist'  Gene Austin Feat. Nat Shilkret & His Orchestra
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Just Like A Melody Out Of The Sky
                                             'bpm'  115.326
                                    'search_title'  'a':3 'just':1 'like':2 'melody':4 'of':6 'out':5 'sky':8 'the':7
                                   'search_artist'  'austin':2 'feat':3,4 'gene':1 'his':7 'nat':5 'orchestra':8 'shilkret':6
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '044':6 '1928':5 '56':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'swing':9
                                    'search_combo'  '044':24 '1928':18C,23 '56':25 'a':3A 'austin':10B 'billboard':17C 'country':22 'exotica':20 'feat':11B,12B 'gene':9B 'his':15B 'jazz':19 'just':1A 'like':2A 'melody':4A 'nat':13B 'of':6A 'oldies':21 'orchestra':16B 'out':5A 'prerock':26 'shilkret':14B 'sky':8A 'swing':27 'the':7A
                                    'tag_tracknum'  44
                                      'num_images'  0
                                             'key'  7A
                                           '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-2', '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'  1620562687.1274092  (2021-05-09 14:18:07)
                             'size'  1259392