======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '258'
                                          'artist'  'Champion Jack Dupree'
                                     'text_people'  ''
                                         'release'  'Women Blues'
                                           'title'  "Ain't That a Shame"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']"
                                     'discogstags'  "['blues', 'piano blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1961'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '140.044'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Women Blues'
'TBPM' (BPM (beats per minute))                     '140.044'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1961'
'TENC' (Encoded by)                                 'Acoustica'
'TIT2' (Title/songname/content description)         "Ain't That a Shame"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Champion Jack Dupree'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['blues', 'piano blues']
'TXXX:lastfmtags'                                   ['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.479747'

========================== row from database ==========================
                                              'id'  1518883
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Women blues (1961)/01 ain_t that a shame.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  258
                                           'genre'  prerock-jb-blues
                                        'filesize'  11098262
                                           'mtime'  1620402707
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country blues (1961) 01 ain_t that shame prerock jb blues
                                      'tag_artist'  Champion Jack Dupree
                                     'tag_release'  Women Blues
                                       'tag_title'  Ain't That a Shame
                                             'bpm'  140.044
                                    'search_title'  'a':5 'ain':1 'aint':3 'shame':6 't':2 'that':4
                                   'search_artist'  'champion':1 'dupree':3 'jack':2
                                  'search_release'  'blues':2 'women':1
                                     'search_rest'  '1961':6,7 'ain':8 'blues':5 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12 'shame':11 't':9 'that':10
                                    'search_combo'  '1961':17,18 'a':5A 'ain':1A,19 'aint':3A 'blues':11C,16 'champion':7B 'country':15 'dupree':9B 'exotica':13 'jack':8B 'jazz':12 'jb':24 'oldies':14 'prerock':23 'shame':6A,22 't':2A,20 'that':4A,21 'women':10C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['boogie woogie', 'new orleans', 'blues', 'piano blues', 'piano']
                                        'tag_date'  1961
                                     'discogstags'  ['blues', 'piano blues']

============================== file details ==============================
                                           'mtime'  1620402707.094438  (2021-05-07 17:51:47)
                             'size'  11098262