======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '174'
                                          'artist'  'George Scott Wood'
                                     'text_people'  ''
                                         'release'  'Columbia FB  1577'
                                           'title'  'When The Sun Says Goodnight To The Mountain (v - Sam Costa)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '128.170'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia FB  1577'
'TBPM' (BPM (beats per minute))                     '128.170'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         'When The Sun Says Goodnight To The Mountain (v - Sam Costa)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'George Scott Wood'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                        '+2.24 dB'
'TXXX:replaygain_track_peak'                        '0.551071'

========================== row from database ==========================
                                              'id'  1453076
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/George Scott Wood - When The Sun Says Goodnight To The Mountain (v - Sam Costa) 27-11-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  174
                                           'genre'  prerock-band
                                        'filesize'  3493685
                                           'mtime'  1620560450
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 27 11 1936 prerock band
                                      'tag_artist'  George Scott Wood
                                     'tag_release'  Columbia FB  1577
                                       'tag_title'  When The Sun Says Goodnight To The Mountain (v - Sam Costa)
                                             'bpm'  128.17
                                    'search_title'  'costa':11,12 'goodnight':5 'mountain':7 'sam':10 'says':4 'sun':3 'the':2 'to':6 'v':8,9 'when':1
                                   'search_artist'  'george':1 'scott':2 'wood':3
                                  'search_release'  '1577':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '1936':6 '27':7 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':23 '1577':18C '1936':24 '27':25 'band':27 'columbia':16C 'costa':11A,12A 'country':22 'exotica':20 'fb':17C 'george':13B 'goodnight':5A 'jazz':19 'mountain':7A 'oldies':21 'prerock':26 'sam':10A 'says':4A 'scott':14B 'sun':3A 'the':2A 'to':6A 'v':8A,9A 'when':1A 'wood':15B
                                    'tag_tracknum'  None
                                      '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560449.5995839  (2021-05-09 13:40:49)
                             'size'  3493685