======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '242'
                                          'artist'  "Dave Kaplan's Melodists"
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  4742'
                                           'title'  "I'm Drifting Back To Dreamland"
                                           '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-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '143.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Edison Blue Amberol  4742'
'TBPM' (BPM (beats per minute))                     '143.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1923-02-23'
'TIT2' (Title/songname/content description)         "I'm Drifting Back To Dreamland"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '242000'
'TPE1' (Lead performer(s)/Soloist(s))               "Dave Kaplan's Melodists"
'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'                                      '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'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.85 dB'
'TXXX:replaygain_track_peak'                        '0.555069'

========================== row from database ==========================
                                              'id'  1520328
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Dave Kaplan_s Melodists - I_m Drifting Back To Dreamland 23-2-1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  242
                                           'genre'  prerock-band
                                        'filesize'  4910500
                                           'mtime'  1620559868
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 Kaplan_s I_m 23 1923 prerock band
                                      'tag_artist'  Dave Kaplan's Melodists
                                     'tag_release'  Edison Blue Amberol  4742
                                       'tag_title'  I'm Drifting Back To Dreamland
                                             'bpm'  143.1
                                    'search_title'  'back':5 'dreamland':7 'drifting':4 'i':1 'im':3 'm':2 'to':6
                                   'search_artist'  'dave':1 'kaplan':2 'kaplans':4 'melodists':5 's':3
                                  'search_release'  '4742':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1923':6 '23':11 'band':13 'country':4 'exotica':2 'i':9 'jazz':1 'kaplan':7 'm':10 'oldies':3 'prerock':12 's':8
                                    'search_combo'  '00oldiepop':21 '1923':22 '23':27 '4742':16C 'amberol':15C 'back':5A 'band':29 'blue':14C 'country':20 'dave':8B 'dreamland':7A 'drifting':4A 'edison':13C 'exotica':18 'i':1A,25 'im':3A 'jazz':17 'kaplan':9B,23 'kaplans':11B 'm':2A,26 'melodists':12B 'oldies':19 'prerock':28 's':10B,24 'to':6A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1923
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559868.037205  (2021-05-09 13:31:08)
                             'size'  4910500