======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '186'
                                          'artist'  'Annette Hanshaw, Joe Venuti, Eddie Lang, Adrian Rollini'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "I'm somebody's somebody now 1927"
                                           '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-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'  '1927'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '99.616'
                                             '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))                     '99.616'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1927'
'TIT2' (Title/songname/content description)         "I'm somebody's somebody now 1927"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Annette Hanshaw, Joe Venuti, Eddie Lang, Adrian Rollini'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.00 dB'
'TXXX:replaygain_track_peak'                        '0.594958'

========================== row from database ==========================
                                              'id'  1501957
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Annette Hanshaw, Joe Venuti, Eddie Lang, Adrian Rollini - I_m somebody_s somebody now 1927.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  186
                                           'genre'  prerock-vocal
                                        'filesize'  3005942
                                           'mtime'  1620666345
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s I_m somebody_s prerock vocal
                                      'tag_artist'  Annette Hanshaw, Joe Venuti, Eddie Lang, Adrian Rollini
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  I'm somebody's somebody now 1927
                                             'bpm'  99.616
                                    'search_title'  '1927':9 'i':1 'im':3 'm':2 'now':8 's':5 'somebody':4,7 'somebodys':6
                                   'search_artist'  'adrian':10 'annette':1 'eddie':7 'hanshaw':2,3 'joe':4 'lang':8,9 'rollini':11 'venuti':5,6
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'country':4 'exotica':2 'i':8 'jazz':1 'm':9 'oldies':3 'prerock':12 's':11 'somebody':10 'vocal':13
                                    'search_combo'  '00oldiepop':29 '1920s':30 '1927':9A '1930s':31 '20s':21C '30s':23C 'adrian':19B 'and':22C 'annette':10B 'country':28 'eddie':16B 'exotica':26 'hanshaw':11B,12B 'i':1A,32 'im':3A 'jazz':25 'joe':13B 'lang':17B,18B 'm':2A,33 'now':8A 'oldies':27 'popular':24C 'prerock':36 'rollini':20B 's':5A,35 'somebody':4A,7A,34 'somebodys':6A 'venuti':14B,15B 'vocal':37
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1927
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666345.186851  (2021-05-10 19:05:45)
                             'size'  3005942