======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '253'
                                          'artist'  'Edison Mixed Quartet & Frederick Wheeler'
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  1533'
                                           'title'  "Tell Mother I'll Be There (long version)"
                                           '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-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1912'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '88.9'
                                             'key'  '5B'
                                        '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  1533'
'TBPM' (BPM (beats per minute))                     '88.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1912'
'TIT2' (Title/songname/content description)         "Tell Mother I'll Be There (long version)"
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '253000'
'TPE1' (Lead performer(s)/Soloist(s))               'Edison Mixed Quartet & Frederick Wheeler'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.524755'

========================== row from database ==========================
                                              'id'  1520646
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1912/Edison Mixed Quartet - Tell Mother I_ll Be There (+ Frederick Wheeler) (long version) 1912.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  253
                                           'genre'  prerock-band
                                        'filesize'  5140648
                                           'mtime'  1620559265
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1912 I_ll (+ Wheeler) 1912 prerock band
                                      'tag_artist'  Edison Mixed Quartet & Frederick Wheeler
                                     'tag_release'  Edison Blue Amberol  1533
                                       'tag_title'  Tell Mother I'll Be There (long version)
                                             'bpm'  88.9
                                    'search_title'  'be':6 'i':3 'ill':5 'll':4 'long':8,9 'mother':2 'tell':1 'there':7 'version':10,11
                                   'search_artist'  'edison':1 'frederick':4 'mixed':2 'quartet':3 'wheeler':5
                                  'search_release'  '1533':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1912':6 'band':12 'country':4 'exotica':2 'i':7 'jazz':1 'll':8 'oldies':3 'prerock':11 'wheeler':9,10
                                    'search_combo'  '00oldiepop':25 '1533':20C '1912':26 'amberol':19C 'band':32 'be':6A 'blue':18C 'country':24 'edison':12B,17C 'exotica':22 'frederick':15B 'i':3A,27 'ill':5A 'jazz':21 'll':4A,28 'long':8A,9A 'mixed':13B 'mother':2A 'oldies':23 'prerock':31 'quartet':14B 'tell':1A 'there':7A 'version':10A,11A 'wheeler':16B,29,30
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           '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-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1912
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559264.509949  (2021-05-09 13:21:04)
                             'size'  5140648