======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '188'
                                          'artist'  'Anna Wheaton'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "I Didn't Know That Lovin' Was So Good"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['pop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '145.2'
                                             'key'  '3A'
                                        '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)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '145.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1916-06'
'TIT2' (Title/songname/content description)         "I Didn't Know That Lovin' Was So Good"
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '188000'
'TPE1' (Lead performer(s)/Soloist(s))               'Anna Wheaton'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'vocal']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.65 dB'
'TXXX:replaygain_track_peak'                        '0.549279'

========================== row from database ==========================
                                              'id'  1513958
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1916/Anna Wheaton - I Didn_t Know That Lovin_ Was So Good -6-1916.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  188
                                           'genre'  prerock-vocal
                                        'filesize'  3862598
                                           'mtime'  1620666239
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1916 Didn_t Lovin_ 6 1916 prerock vocal
                                      'tag_artist'  Anna Wheaton
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  I Didn't Know That Lovin' Was So Good
                                             'bpm'  145.2
                                    'search_title'  'didn':2 'didnt':4 'good':11 'i':1 'know':5 'lovin':7,8 'so':10 't':3 'that':6 'was':9
                                   'search_artist'  'anna':1 'wheaton':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1916':6 '6':10 'country':4 'didn':7 'exotica':2 'jazz':1 'lovin':9 'oldies':3 'prerock':11 't':8 'vocal':12
                                    'search_combo'  '00oldiepop':23 '1916':24 '6':28 'album':15C 'anna':12B 'country':22 'didn':2A,25 'didnt':4A 'exotica':20 'good':11A 'i':1A 'jazz':19 'know':5A 'lovin':7A,8A,27 'non':14C 'nonalbum':16C 'oldies':21 'prerock':29 'so':10A 't':3A,26 'that':6A 'tracks':17C,18C 'vocal':30 'was':9A 'wheaton':13B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1916
                                     'discogstags'  ['pop', 'vocal']

============================== file details ==============================
                                           'mtime'  1620666238.8523912  (2021-05-10 19:03:58)
                             'size'  3862598