======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '181'
                                          'artist'  "Mildred Bailey & Dorsey Brother's Orchestra"
                                     'text_people'  ''
                                         'release'  '1920s and 1930s popular'
                                           'title'  'Give Me Liberty Or Give Me Love'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '110.062'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '1920s and 1930s popular'
'TBPM' (BPM (beats per minute))                     '110.062'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Give Me Liberty Or Give Me Love'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '181766'
'TPE1' (Lead performer(s)/Soloist(s))               "Mildred Bailey & Dorsey Brother's Orchestra"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'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'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.68 dB'
'TXXX:replaygain_track_peak'                        '0.561179'

========================== row from database ==========================
                                              'id'  1137777
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Dorsey Brothers, Mildred Bailey - Give Me Liberty Or Give Me Love.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  181
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2558407
                                           'mtime'  1620524481
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop Brothers, prerock jb jazz unsorted
                                      'tag_artist'  Mildred Bailey & Dorsey Brother's Orchestra
                                     'tag_release'  1920s and 1930s popular
                                       'tag_title'  Give Me Liberty Or Give Me Love
                                             'bpm'  110.062
                                    'search_title'  'give':1 'liberty':3 'love':5 'me':2 'or':4
                                   'search_artist'  'bailey':2 'brother':4 'brothers':6 'dorsey':3 'mildred':1 'orchestra':7 's':5
                                  'search_release'  '1920s':1 '1930s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 'brothers':6,7 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 'unsorted':10
                                    'search_combo'  '00oldiepop':21 '1920s':13C '1930s':15C 'and':14C 'bailey':7B 'brother':9B 'brothers':11B,22,23 'country':20 'dorsey':8B 'exotica':18 'give':1A 'jazz':17 'jb':25 'liberty':3A 'love':5A 'me':2A 'mildred':6B 'oldies':19 'or':4A 'orchestra':12B 'popular':16C 'prerock':24 's':10B 'unsorted':26
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-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-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524481.1674387  (2021-05-09 03:41:21)
                             'size'  2558407