======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '154'
                                          'artist'  'Ben Bernie/Hotel Roosevelt Orchestra'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "Ain't She Sweet?"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1927'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '110.242'
                                             '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))                     '110.242'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1927'
'TIT2' (Title/songname/content description)         "Ain't She Sweet?"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '154805'
'TPE1' (Lead performer(s)/Soloist(s))               'Ben Bernie/Hotel Roosevelt Orchestra'
'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'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.88 dB'
'TXXX:replaygain_track_peak'                        '0.420265'

========================== row from database ==========================
                                              'id'  1500707
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ben Bernie and all The Lads, V=Scrappy Lambert - Ain_t She Sweet 1927.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  154
                                           'genre'  prerock-swing
                                        'filesize'  2178213
                                           'mtime'  1620559525
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s all The Lads, V=Scrappy Lambert Ain_t 1927 prerock swing
                                      'tag_artist'  Ben Bernie/Hotel Roosevelt Orchestra
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  Ain't She Sweet?
                                             'bpm'  110.242
                                    'search_title'  'ain':1 'aint':3 'she':4 'sweet':5 't':2
                                   'search_artist'  'ben':1 'bernie':2 'berniehotel':4 'hotel':3 'orchestra':6 'roosevelt':5
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1927':17 '1930s':7 'ain':15 'all':8 'country':4 'exotica':2 'jazz':1 'lads':10,11 'lambert':14 'oldies':3 'prerock':18 'scrappy':13 'swing':19 't':16 'the':9 'v':12
                                    'search_combo'  '00oldiepop':20 '1920s':21 '1927':32 '1930s':22 '20s':12C '30s':14C 'ain':1A,30 'aint':3A 'all':23 'and':13C 'ben':6B 'bernie':7B 'berniehotel':9B 'country':19 'exotica':17 'hotel':8B 'jazz':16 'lads':25,26 'lambert':29 'oldies':18 'orchestra':11B 'popular':15C 'prerock':33 'roosevelt':10B 'scrappy':28 'she':4A 'sweet':5A 'swing':34 't':2A,31 'the':24 'v':27
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1927
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559525.2711177  (2021-05-09 13:25:25)
                             'size'  2178213