======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '168'
                                          'artist'  'Ambrose Mayfair Hotel Orchestra, Denny Dennis'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "I've Got a pocketful of dreams"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '144.748'
                                             'key'  '4A'
                                        '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))                     '144.748'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1938'
'TIT2' (Title/songname/content description)         "I've Got a pocketful of dreams"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ambrose Mayfair Hotel Orchestra, Denny Dennis'
'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'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.29 dB'
'TXXX:replaygain_track_peak'                        '0.707899'

========================== row from database ==========================
                                              'id'  1504132
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ambrose Mayfair Hotel Orchestra, Denny Dennis - I_ve Got a pocketful of dreams (1938).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  168
                                           'genre'  prerock-band
                                        'filesize'  2705408
                                           'mtime'  1620559742
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s I_ve (1938) prerock band
                                      'tag_artist'  Ambrose Mayfair Hotel Orchestra, Denny Dennis
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  I've Got a pocketful of dreams
                                             'bpm'  144.748
                                    'search_title'  'a':5 'dreams':8 'got':4 'i':1 'ive':3 'of':7 'pocketful':6 've':2
                                   'search_artist'  'ambrose':1 'dennis':7 'denny':6 'hotel':3 'mayfair':2 'orchestra':4,5
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1938':10,11 'band':13 'country':4 'exotica':2 'i':8 'jazz':1 'oldies':3 'prerock':12 've':9
                                    'search_combo'  '00oldiepop':24 '1920s':25 '1930s':26 '1938':29,30 '20s':16C '30s':18C 'a':5A 'ambrose':9B 'and':17C 'band':32 'country':23 'dennis':15B 'denny':14B 'dreams':8A 'exotica':21 'got':4A 'hotel':11B 'i':1A,27 'ive':3A 'jazz':20 'mayfair':10B 'of':7A 'oldies':22 'orchestra':12B,13B 'pocketful':6A 'popular':19C 'prerock':31 've':2A,28
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           '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-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1938
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559741.5464504  (2021-05-09 13:29:01)
                             'size'  2705408