======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '200'
                                          'artist'  'Arthur Briggs'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'It Makes You Happy'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'schellack-schatz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1927'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '117.603'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '117.603'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1927'
'TIT2' (Title/songname/content description)         'It Makes You Happy'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '200501'
'TPE1' (Lead performer(s)/Soloist(s))               'Arthur Briggs'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'schellack-schatz']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+1.15 dB'
'TXXX:replaygain_track_peak'                        '0.425202'

========================== row from database ==========================
                                              'id'  1505603
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Arthur Briggs_ Savoy Syncopators Orch - It Made You Happy When You Made Me Cry (1927).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  200
                                           'genre'  prerock-unsorted
                                        'filesize'  3241050
                                           'mtime'  1620385236
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Briggs_ Savoy Syncopators Orch Made When Made Me Cry (1927) prerock unsorted
                                      'tag_artist'  Arthur Briggs
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  It Makes You Happy
                                             'bpm'  117.603
                                    'search_title'  'happy':4 'it':1 'makes':2 'you':3
                                   'search_artist'  'arthur':1 'briggs':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1927':16,17 '1930s':7 'briggs':8 'country':4 'cry':15 'exotica':2 'jazz':1 'made':12 'me':14 'oldies':3 'orch':11 'prerock':18 'savoy':9 'syncopators':10 'unsorted':19 'when':13
                                    'search_combo'  '00oldiepop':15 '1920s':16 '1927':26,27 '1930s':17 '20s':7C '30s':9C 'and':8C 'arthur':5B 'briggs':6B,18 'country':14 'cry':25 'exotica':12 'happy':4A 'it':1A 'jazz':11 'made':22 'makes':2A 'me':24 'oldies':13 'orch':21 'popular':10C 'prerock':28 'savoy':19 'syncopators':20 'unsorted':29 'when':23 'you':3A
                                    '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'schellack-schatz']
                                        'tag_date'  1927
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385236.1124065  (2021-05-07 13:00:36)
                             'size'  3241050