======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '177'
                                          'artist'  'Ben Selvin v: Eddie Walters'
                                     'text_people'  ''
                                         'release'  'Columbia 2491-D'
                                           'title'  'Sing Another Chorus Please'
                                           '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-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1931'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '89.770'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Columbia 2491-D'
'TBPM' (BPM (beats per minute))                     '89.770'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1931'
'TIT2' (Title/songname/content description)         'Sing Another Chorus Please'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '177274'
'TPE1' (Lead performer(s)/Soloist(s))               'Ben Selvin v: Eddie Walters'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.41 dB'
'TXXX:replaygain_track_peak'                        '0.421236'

========================== row from database ==========================
                                              'id'  1515297
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ben Selvin_s Knickerbockers, Eddie Walters - Sing Another Chorus, Please.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  177
                                           'genre'  prerock-swing
                                        'filesize'  2496520
                                           'mtime'  1620559521
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s and 1930s popular Selvin_s Knickerbockers, Chorus, prerock swing
                                      'tag_artist'  Ben Selvin v: Eddie Walters
                                     'tag_release'  Columbia 2491-D
                                       'tag_title'  Sing Another Chorus Please
                                             'bpm'  89.77
                                    'search_title'  'another':2 'chorus':3 'please':4 'sing':1
                                   'search_artist'  'ben':1 'eddie':5 'selvin':2 'v':3,4 'walters':6
                                  'search_release'  '2491':2 '2491d':4 'columbia':1 'd':3
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':8 'and':7 'chorus':14,15 'country':4 'exotica':2 'jazz':1 'knickerbockers':12,13 'oldies':3 'popular':9 'prerock':16 's':11 'selvin':10 'swing':17
                                    'search_combo'  '00oldiepop':19 '1920s':20 '1930s':22 '2491':12C '2491d':14C 'and':21 'another':2A 'ben':5B 'chorus':3A,28,29 'columbia':11C 'country':18 'd':13C 'eddie':9B 'exotica':16 'jazz':15 'knickerbockers':26,27 'oldies':17 'please':4A 'popular':23 'prerock':30 's':25 'selvin':6B,24 'sing':1A 'swing':31 'v':7B,8B 'walters':10B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           '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-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'  1931
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559521.248192  (2021-05-09 13:25:21)
                             'size'  2496520