======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '207'
                                          'artist'  'Austin Kelley & Artie Shaw Orchestra'
                                     'text_people'  ''
                                         'release'  "1930's rare and popular music"
                                           'title'  'I Could Write A Book'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '104.768'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "1930's rare and popular music"
'TBPM' (BPM (beats per minute))                     '104.768'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'I Could Write A Book'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '207192'
'TPE1' (Lead performer(s)/Soloist(s))               'Austin Kelley & Artie Shaw Orchestra'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.81 dB'
'TXXX:replaygain_track_peak'                        '0.533846'

========================== row from database ==========================
                                              'id'  1132719
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Artie Shaw. V=Austin Kelley - I Could Write A Book.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  207
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  3330262
                                           'mtime'  1620524248
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Shaw. V=Austin prerock jb jazz soft swing
                                      'tag_artist'  Austin Kelley & Artie Shaw Orchestra
                                     'tag_release'  1930's rare and popular music
                                       'tag_title'  I Could Write A Book
                                             'bpm'  104.768
                                    'search_title'  'a':4 'book':5 'could':2 'i':1 'write':3
                                   'search_artist'  'artie':3 'austin':1 'kelley':2 'orchestra':5 'shaw':4
                                  'search_release'  '1930':1 '1930s':3 'and':5 'music':7 'popular':6 'rare':4 's':2
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'austin':11 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12 'shaw':8,9 'soft':14 'swing':15 'v':10
                                    'search_combo'  '00oldiepop':22 '1920s':23 '1930':11C '1930s':13C,24 'a':4A 'and':15C 'artie':8B 'austin':6B,28 'book':5A 'could':2A 'country':21 'exotica':19 'i':1A 'jazz':18 'jb':30 'kelley':7B 'music':17C 'oldies':20 'orchestra':10B 'popular':16C 'prerock':29 'rare':14C 's':12C 'shaw':9B,25,26 'soft':31 'swing':32 'v':27 'write':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', '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-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524248.3513455  (2021-05-09 03:37:28)
                             'size'  3330262